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LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller; 16/32 kB flash, 8 kB SRAM; C_CAN
Rev. 2 -- 3 December 2010 Product data sheet
1. General description
The LPC11Cx2/Cx4 are an ARM Cortex-M0 based, low-cost 32-bit MCU family, designed for 8/16-bit microcontroller applications, offering performance, low power, simple instruction set and memory addressing together with reduced code size compared to existing 8/16-bit architectures. The LPC11Cx2/Cx4 operate at CPU frequencies of up to 50 MHz. The peripheral complement of the LPC11Cx2/Cx4 includes 16/32 kB of flash memory, 8 kB of data memory, one C_CAN controller, one Fast-mode Plus I2C-bus interface, one RS-485/EIA-485 UART, two SPI interfaces with SSP features, four general purpose counter/timers, a 10-bit ADC, and up to 40 general purpose I/O pins. On-chip C_CAN drivers and flash In-System Programming tools via C_CAN are included. In addition, the LPC11C22 and LPC11C24 parts include an on-chip, high-speed CAN transceiver.
2. Features and benefits
System: ARM Cortex-M0 processor, running at frequencies of up to 50 MHz. ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC). Serial Wire Debug. System tick timer. Memory: 32 kB (LPC11CX4) or 16 kB (LPC11Cx2) on-chip flash program memory. 8 kB SRAM data memory. In-System Programming (ISP) and In-Application Programming (IAP) via on-chip bootloader software. Flash ISP commands can be issued via UART or C_CAN. Digital peripherals: General Purpose I/O (GPIO) pins with configurable pull-up/pull-down resistors. 40 GPIO pins on the LPC11C12/C14 parts; 36 GPIO pins on the LPC11C22/C24 parts. GPIO pins can be used as edge and level sensitive interrupt sources. High-current output driver (20 mA) on one pin. High-current sink drivers (20 mA) on two I2C-bus pins in Fast-mode Plus. Four general purpose counter/timers with a total of four capture inputs and 13 (LPC11C12/C14) or 12 (LPC11C22/C24) match outputs.
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller

Programmable WatchDog Timer (WDT). Analog peripherals: 10-bit ADC with input multiplexing among 8 pins. Serial interfaces: UART with fractional baud rate generation, internal FIFO, and RS-485 support. Two SPI controllers with SSP features and with FIFO and multi-protocol capabilities. I2C-bus interface supporting full I2C-bus specification and Fast-mode Plus with a data rate of 1 Mbit/s with multiple address recognition and monitor mode. C_CAN controller. On-chip C_CAN and CANopen drivers included. On-chip, high-speed CAN transceiver (parts LPC11C22/C24 only). Clock generation: 12 MHz internal RC oscillator trimmed to 1 % accuracy that can optionally be used as a system clock. Crystal oscillator with an operating range of 1 MHz to 25 MHz. Programmable watchdog oscillator with a frequency range of 7.8 kHz to 1.8 MHz. PLL allows CPU operation up to the maximum CPU rate without the need for a high-frequency crystal. May be run from the system oscillator or the internal RC oscillator. Clock output function with divider that can reflect the system oscillator, IRC, CPU clock, or the Watchdog clock. Power control: Integrated PMU (Power Management Unit) to minimize power consumption during Sleep, Deep-sleep, and Deep power-down modes. Three reduced power modes: Sleep, Deep-sleep, and Deep power-down. Processor wake-up from Deep-sleep mode via a dedicated start logic using 13 of the GPIO pins. Power-On Reset (POR). Brownout detect with four separate thresholds for interrupt and forced reset. Unique device serial number for identification. Single 3.3 V power supply (1.8 V to 3.6 V). Available as 48-pin LQFP package.
3. Applications
eMetering Elevator systems Industrial and sensor based networks White goods
LPC11CX2_CX4
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(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
2 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
4. Ordering information
Table 1. Ordering information Package Name LPC11C12FBD48/301 LPC11C14FBD48/301 LPC11C22FBD48/301 LPC11C24FBD48/301 LQFP48 LQFP48 LQFP48 LQFP48 Description Version LQFP48: plastic low profile quad flat package; 48 leads; body 7 7 sot313-2 1.4 mm LQFP48: plastic low profile quad flat package; 48 leads; body 7 7 sot313-2 1.4 mm LQFP48: plastic low profile quad flat package; 48 leads; body 7 7 sot313-2 1.4 mm LQFP48: plastic low profile quad flat package; 48 leads; body 7 7 sot313-2 1.4 mm Type number
4.1 Ordering options
Table 2. Ordering options Flash Total UART SRAM RS-485 I2C/ SPI C_CAN C_CAN with GPIO Fast+ on-chip pins CAN transceiver 1 1 1 1 2 2 2 2 1 1 1 1 no no yes yes 40 40 36 36 ADC Package channels Type number
LPC11C12FBD48/301 LPC11C14FBD48/301 LPC11C22FBD48/301 LPC11C24FBD48/301
16 kB 32 kB 16 kB 32 kB
8 kB 8 kB 8 kB 8 kB
1 1 1 1
8 8 8 8
LQFP48 LQFP48 LQFP48 LQFP48
LPC11CX2_CX4
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(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
3 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
5. Block diagram
XTALIN XTALOUT RESET
SWD
LPC11Cx2/Cx4
IRC TEST/DEBUG INTERFACE CLOCK GENERATION, POWER CONTROL, SYSTEM FUNCTIONS clocks and controls FLASH 16/32 kB slave GPIO ports PIO0/1/2/3 HIGH-SPEED GPIO slave AHB-LITE BUS SRAM 8 kB slave slave CLKOUT
POR
ARM CORTEX-M0
system bus
ROM
slave AHB TO APB BRIDGE RXD TXD DTR, DSR, CTS, DCD, RI, RTS CT32B0_MAT[3:0] CT32B0_CAP0 CT32B1_MAT[3:0] CT32B1_CAP0 CT16B0_MAT[2:0] CT16B0_CAP0 CT16B1_MAT[1:0](1) CT16B1_CAP0 CAN_TXD CAN_RXD CANL, CANH STB VCC, VDD_CAN UART 10-bit ADC AD[7:0] SCK0, SSEL0 MISO0, MOSI0 SCK1, SSEL1 MISO1, MOSI1 SCL SDA
SPI0 32-bit COUNTER/TIMER 0 SPI1 32-bit COUNTER/TIMER 1 I2C-BUS 16-bit COUNTER/TIMER 0 16-bit COUNTER/TIMER 1 WDT IOCONFIG C_CAN (LPC11C12/C14) SYSTEM CONTROL C_CAN/ ON-CHIP TRANSCEIVER (LPC11C22/C24) PMU
002aaf265
(1) CT16B1_MAT0 not available on parts LPC11C22/C24.
Fig 1.
LPC11Cx2/Cx4 block diagram
LPC11CX2_CX4
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(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
4 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
6. Pinning information
6.1 Pinning
40 PIO1_4/AD5/CT32B1_MAT3/WAKEUP
39 SWDIO/PIO1_3/AD4/CT32B1_MAT2
46 PIO1_6/RXD/CT32B0_MAT0
47 PIO1_7/TXD/CT32B0_MAT1
45 PIO1_5/RTS/CT32B0_CAP0
38 PIO2_3/RI/MOSI1
42 PIO1_11/AD7
43 PIO3_2/DCD
PIO2_6 PIO2_0/DTR/SSEL1 RESET/PIO0_0 PIO0_1/CLKOUT/CT32B0_MAT2 VSS XTALIN XTALOUT VDD PIO1_8/CT16B1_CAP0
1 2 3 4 5 6 7 8 9
37 PIO3_1/DSR 36 PIO3_0/DTR 35 R/PIO1_2/AD3/CT32B1_MAT1 34 R/PIO1_1/AD2/CT32B1_MAT0 33 R/PIO1_0/AD1/CT32B1_CAP0 32 R/PIO0_11/AD0/CT32B0_MAT3 31 PIO2_11/SCK0 30 PIO1_10/AD6/CT16B1_MAT1 29 SWCLK/PIO0_10/SCK0/CT16B0_MAT2 28 PIO0_9/MOSI0/CT16B0_MAT1 27 PIO0_8/MISO0/CT16B0_MAT0 26 PIO2_2/DCD/MISO1 25 PIO2_10 PIO2_9 24
002aaf266
48 PIO3_3/RI
44 VDD
LPC11C12FBD48/301 LPC11C14FBD48/301
PIO0_2/SSEL0/CT16B0_CAP0 10 PIO2_7 11 PIO2_8 12 PIO2_1/DSR/SCK1 13 PIO0_3 14 PIO0_4/SCL 15 PIO0_5/SDA 16 PIO1_9/CT16B1_MAT0 17 PIO2_4 18 CAN_RXD 19 CAN_TXD 20 PIO2_5 21 PIO0_6/SCK0 22 PIO0_7/CTS 23
Fig 2.
Pin configuration (LPC11C12/C14)
LPC11CX2_CX4
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41 VSS
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
5 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
40 PIO1_4/AD5/CT32B1_MAT3/WAKEUP
39 SWDIO/PIO1_3/AD4/CT32B1_MAT2
46 PIO1_6/RXD/CT32B0_MAT0
47 PIO1_7/TXD/CT32B0_MAT1
45 PIO1_5/RTS/CT32B0_CAP0
38 PIO2_3/RI/MOSI1
42 PIO1_11/AD7
43 PIO3_2/DCD
PIO2_6 PIO2_0/DTR/SSEL1 RESET/PIO0_0 PIO0_1/CLKOUT/CT32B0_MAT2 VSS XTALIN XTALOUT VDD PIO1_8/CT16B1_CAP0
1 2 3 4 5 6 7 8 9
37 PIO3_1/DSR 36 PIO3_0/DTR 35 R/PIO1_2/AD3/CT32B1_MAT1 34 R/PIO1_1/AD2/CT32B1_MAT0 33 R/PIO1_0/AD1/CT32B1_CAP0 32 R/PIO0_11/AD0/CT32B0_MAT3 31 PIO2_11/SCK0 30 PIO1_10/AD6/CT16B1_MAT1 29 SWCLK/PIO0_10/SCK0/CT16B0_MAT2 28 PIO0_9/MOSI0/CT16B0_MAT1 27 PIO0_8/MISO0/CT16B0_MAT0 26 PIO2_2/DCD/MISO1 25 PIO2_10 PIO0_7/CTS 24
002aaf909
48 PIO3_3/RI
44 VDD
LPC11C22FBD48/301 LPC11C24FBD48/301
PIO0_2/SSEL0/CT16B0_CAP0 10 PIO2_7 11 PIO2_8 12 PIO2_1/DSR/SCK1 13 PIO0_3 14 PIO0_4/SCL 15 PIO0_5/SDA 16 VDD_CAN 17 CANL 18 CANH 19 VCC 20 GND 21 STB 22 PIO0_6/SCK0 23
Fig 3.
Pin configuration (LPC11C22/C24)
LPC11CX2_CX4
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41 VSS
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
6 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
6.2 Pin description
Table 3. Symbol LPC11C12/C14 pin description table Pin Start Type logic inputs Reset Description state
[1]
PIO0_0 to PIO0_11
Port 0 -- Port 0 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 0 pins depends on the function selected through the IOCONFIG register block. 3[2] yes I I; PU RESET -- External reset input with 20 ns glitch filter. A LOW-going pulse as short as 50 ns on this pin resets the device, causing I/O ports and peripherals to take on their default states, and processor execution to begin at address 0. PIO0_0 -- General purpose digital input/output pin with 10 ns glitch filter. PIO0_1 -- General purpose digital input/output pin. A LOW level on this pin during reset starts the flash ISP command handler via UART (if PIO0_3 is HIGH) or via C_CAN (if PIO0_3 is LOW). CLKOUT -- Clockout pin. CT32B0_MAT2 -- Match output 2 for 32-bit timer 0. PIO0_2 -- General purpose digital input/output pin. SSEL0 -- Slave Select for SPI0. CT16B0_CAP0 -- Capture input 0 for 16-bit timer 0. PIO0_3 -- General purpose digital input/output pin. This pin is monitored during reset: Together with a LOW level on pin PIO0_1, a LOW level starts the flash ISP command handler via C_CAN and a HIGH level starts the flash ISP command handler via UART. PIO0_4 -- General purpose digital input/output pin (open-drain). SCL -- I2C-bus, open-drain clock input/output. High-current sink only if I2C Fast-mode Plus is selected in the I/O configuration register. PIO0_5 -- General purpose digital input/output pin (open-drain). SDA -- I2C-bus, open-drain data input/output. High-current sink only if I2C Fast-mode Plus is selected in the I/O configuration register. PIO0_6 -- General purpose digital input/output pin. SCK0 -- Serial clock for SPI0. PIO0_7 -- General purpose digital input/output pin (high-current output driver). CTS -- Clear To Send input for UART. PIO0_8 -- General purpose digital input/output pin. MISO0 -- Master In Slave Out for SPI0. CT16B0_MAT0 -- Match output 0 for 16-bit timer 0. PIO0_9 -- General purpose digital input/output pin. MOSI0 -- Master Out Slave In for SPI0. CT16B0_MAT1 -- Match output 1 for 16-bit timer 0. SWCLK -- Serial wire clock. PIO0_10 -- General purpose digital input/output pin. SCK0 -- Serial clock for SPI0. CT16B0_MAT2 -- Match output 2 for 16-bit timer 0.
(c) NXP B.V. 2010. All rights reserved.
RESET/PIO0_0
I/O PIO0_1/CLKOUT/ CT32B0_MAT2 4[3] yes I/O
I; PU
O O PIO0_2/SSEL0/ CT16B0_CAP0 10[3] yes I/O I/O I PIO0_3 14[3] yes I/O
I; PU I; PU
PIO0_4/SCL
15[4]
yes
I/O I/O
I; IA I; IA I; PU I; PU I; PU I; PU I; PU -
PIO0_5/SDA
16[4]
yes
I/O I/O
PIO0_6/SCK0 PIO0_7/CTS
22[3] 23[3]
yes yes
I/O I/O I/O I
PIO0_8/MISO0/ CT16B0_MAT0
27[3]
yes
I/O I/O O
PIO0_9/MOSI0/ CT16B0_MAT1
28[3]
yes
I/O I/O O
SWCLK/PIO0_10/ SCK0/ CT16B0_MAT2
29[3]
yes
I I/O I/O O
LPC11CX2_CX4
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Product data sheet
Rev. 2 -- 3 December 2010
7 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
Table 3. Symbol
LPC11C12/C14 pin description table Pin Start Type logic inputs yes I/O I O Reset Description state
[1]
R/PIO0_11/ AD0/ CT32B0_MAT3
32[5]
I; PU -
R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO0_11 -- General purpose digital input/output pin. AD0 -- A/D converter, input 0. CT32B0_MAT3 -- Match output 3 for 32-bit timer 0. Port 1 -- Port 1 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 1 pins depends on the function selected through the IOCONFIG register block.
PIO1_0 to PIO1_11
R/PIO1_0/AD1/ CT32B1_CAP0
33[5]
yes
I/O I I
I; PU I; PU I; PU I; PU I; PU -
R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO1_0 -- General purpose digital input/output pin. AD1 -- A/D converter, input 1. CT32B1_CAP0 -- Capture input 0 for 32-bit timer 1. R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO1_1 -- General purpose digital input/output pin. AD2 -- A/D converter, input 2. CT32B1_MAT0 -- Match output 0 for 32-bit timer 1. R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO1_2 -- General purpose digital input/output pin. AD3 -- A/D converter, input 3. CT32B1_MAT1 -- Match output 1 for 32-bit timer 1. SWDIO -- Serial wire debug input/output. PIO1_3 -- General purpose digital input/output pin. AD4 -- A/D converter, input 4. CT32B1_MAT2 -- Match output 2 for 32-bit timer 1. PIO1_4 -- General purpose digital input/output pin with 10 ns glitch filter. AD5 -- A/D converter, input 5. CT32B1_MAT3 -- Match output 3 for 32-bit timer 1. WAKEUP -- Deep power-down mode wake-up pin with 20 ns glitch filter. This pin must be pulled HIGH externally to enter Deep power-down mode and pulled LOW to exit Deep power-down mode. A LOW-going pulse as short as 50 ns wakes up the part. PIO1_5 -- General purpose digital input/output pin. RTS -- Request To Send output for UART. CT32B0_CAP0 -- Capture input 0 for 32-bit timer 0. PIO1_6 -- General purpose digital input/output pin. RXD -- Receiver input for UART. CT32B0_MAT0 -- Match output 0 for 32-bit timer 0.
R/PIO1_1/AD2/ CT32B1_MAT0
34[5]
no
I/O I O
R/PIO1_2/AD3/ CT32B1_MAT1
35[5]
no
I/O I O
SWDIO/PIO1_3/ AD4/ CT32B1_MAT2
39[5]
no
I/O I/O I O
PIO1_4/AD5/ CT32B1_MAT3/ WAKEUP
40[5]
no
I/O I O I
PIO1_5/RTS/ CT32B0_CAP0
45[3]
no
I/O O I
I; PU I; PU -
PIO1_6/RXD/ CT32B0_MAT0
46[3]
no
I/O I O
LPC11CX2_CX4
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
8 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
Table 3. Symbol
LPC11C12/C14 pin description table Pin Start Type logic inputs no I/O O O 9[3] 17[3] 30[5] no no no I/O I I/O O I/O I O 42[5] no I/O I Reset Description state
[1]
PIO1_7/TXD/ CT32B0_MAT1
47[3]
I; PU I; PU I; PU I; PU I; PU -
PIO1_7 -- General purpose digital input/output pin. TXD -- Transmitter output for UART. CT32B0_MAT1 -- Match output 1 for 32-bit timer 0. PIO1_8 -- General purpose digital input/output pin. CT16B1_CAP0 -- Capture input 0 for 16-bit timer 1. PIO1_9 -- General purpose digital input/output pin. CT16B1_MAT0 -- Match output 0 for 16-bit timer 1. PIO1_10 -- General purpose digital input/output pin. AD6 -- A/D converter, input 6. CT16B1_MAT1 -- Match output 1 for 16-bit timer 1. PIO1_11 -- General purpose digital input/output pin. AD7 -- A/D converter, input 7. Port 2 -- Port 2 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 2 pins depends on the function selected through the IOCONFIG register block.
PIO1_8/ CT16B1_CAP0 PIO1_9/ CT16B1_MAT0 PIO1_10/AD6/ CT16B1_MAT1
PIO1_11/AD7 PIO2_0 to PIO2_11
PIO2_0/DTR/ SSEL1
2[3]
no
I/O I/O I/O
I; PU I; PU I; PU I; PU I; PU I; PU I; PU I; PU I; PU I; PU I; PU I; PU -
PIO2_0 -- General purpose digital input/output pin. DTR -- Data Terminal Ready output for UART. SSEL1 -- Slave Select for SPI1. PIO2_1 -- General purpose digital input/output pin. DSR -- Data Set Ready input for UART. SCK1 -- Serial clock for SPI1. PIO2_2 -- General purpose digital input/output pin. DCD -- Data Carrier Detect input for UART. MISO1 -- Master In Slave Out for SPI1. PIO2_3 -- General purpose digital input/output pin. RI -- Ring Indicator input for UART. MOSI1 -- Master Out Slave In for SPI1. PIO2_4 -- General purpose digital input/output pin. PIO2_5 -- General purpose digital input/output pin. PIO2_6 -- General purpose digital input/output pin. PIO2_7 -- General purpose digital input/output pin. PIO2_8 -- General purpose digital input/output pin. PIO2_9 -- General purpose digital input/output pin. PIO2_10 -- General purpose digital input/output pin. PIO2_11 -- General purpose digital input/output pin. SCK0 -- Serial clock for SPI0. Port 3 -- Port 3 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 3 pins depends on the function selected through the IOCONFIG register block. Pins PIO3_4 to PIO3_11 are not available.
PIO2_1/DSR/SCK1 13[3]
no
I/O I I/O
PIO2_2/DCD/ MISO1
26[3]
no
I/O I I/O
PIO2_3/RI/MOSI1
38[3]
no
I/O I I/O
PIO2_4 PIO2_5 PIO2_6 PIO2_7 PIO2_8 PIO2_9 PIO2_10 PIO2_11/SCK0 PIO3_0 to PIO3_3
18[3] 21[3] 1[3] 11[3] 12[3] 24[3] 25[3] 31[3]
no no no no no no no no
I/O I/O I/O I/O I/O I/O I/O I/O I/O
LPC11CX2_CX4
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
9 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
Table 3. Symbol
LPC11C12/C14 pin description table Pin Start Type logic inputs no no no no no no I/O O I/O I I/O I I/O I I O I I O I Reset Description state
[1]
PIO3_0/DTR PIO3_1/DSR PIO3_2/DCD PIO3_3/RI CAN_RXD CAN_TXD VDD XTALIN XTALOUT VSS
[1] [2]
36[3] 37[3] 43[3] 48[3] 19[6] 20[6] 8; 44 6[7] 7[7] 5; 41
I; PU I; PU I; PU I; PU I; IA I; IA -
PIO3_0 -- General purpose digital input/output pin. DTR -- Data Terminal Ready output for UART. PIO3_1 -- General purpose digital input/output pin. DSR -- Data Set Ready input for UART. PIO3_2 -- General purpose digital input/output pin. DCD -- Data Carrier Detect input for UART. PIO3_3 -- General purpose digital input/output pin. RI -- Ring Indicator input for UART. CAN_RXD -- C_CAN receive data input. CAN_TXD -- C_CAN transmit data output. Supply voltage to the internal regulator, the external rail, and the ADC. Also used as the ADC reference voltage. Input to the oscillator circuit and internal clock generator circuits. Input voltage must not exceed 1.8 V. Output from the oscillator amplifier. Ground.
Pin state at reset for default function: I = Input; O = Output; PU = internal pull-up enabled; IA = inactive, no pull-up/down enabled. See Figure 26 for reset pad configuration. RESET functionality is not available in Deep power-down mode. Use the WAKEUP pin to reset the chip and wake up from Deep power-down mode. An external pull-up resistor is required on this pin for the Deep power-down mode. 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis (see Figure 25). I2C-bus pads compliant with the I2C-bus specification for I2C standard mode and I2C Fast-mode Plus. 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors, configurable hysteresis, and analog input. When configured as a ADC input, digital section of the pad is disabled and the pin is not 5 V tolerant (see Figure 25). 5 V tolerant digital I/O pad without pull-up/pull-down resistors. When the system oscillator is not used, connect XTALIN and XTALOUT as follows: XTALIN can be left floating or can be grounded (grounding is preferred to reduce susceptibility to noise). XTALOUT should be left floating.
[3] [4] [5] [6] [7]
Table 4. Symbol
LPC11C22/C24 pin description table Pin Start Type logic inputs Reset Description state
[1]
PIO0_0 to PIO0_11
Port 0 -- Port 0 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 0 pins depends on the function selected through the IOCONFIG register block. 3[2] yes I I; PU RESET -- External reset input with 20 ns glitch filter. A LOW-going pulse as short as 50 ns on this pin resets the device, causing I/O ports and peripherals to take on their default states, and processor execution to begin at address 0. PIO0_0 -- General purpose digital input/output pin with 10 ns glitch filter.
RESET/PIO0_0
I/O
-
LPC11CX2_CX4
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
10 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
Table 4. Symbol
LPC11C22/C24 pin description table Pin Start Type logic inputs yes I/O Reset Description state
[1]
PIO0_1/CLKOUT/ CT32B0_MAT2
4[3]
I; PU
PIO0_1 -- General purpose digital input/output pin. A LOW level on this pin during reset starts the flash ISP command handler via UART (if PIO0_3 is HIGH) or via C_CAN (if PIO0_3 is LOW). CLKOUT -- Clockout pin. CT32B0_MAT2 -- Match output 2 for 32-bit timer 0. PIO0_2 -- General purpose digital input/output pin. SSEL0 -- Slave Select for SPI0. CT16B0_CAP0 -- Capture input 0 for 16-bit timer 0. PIO0_3 -- General purpose digital input/output pin. This pin is monitored during reset: Together with a LOW level on pin PIO0_1, a LOW level starts the flash ISP command handler via C_CAN and a HIGH level starts the flash ISP command handler via UART. PIO0_4 -- General purpose digital input/output pin (open-drain). SCL -- I2C-bus, open-drain clock input/output. High-current sink only if I2C Fast-mode Plus is selected in the I/O configuration register. PIO0_5 -- General purpose digital input/output pin (open-drain). SDA -- I2C-bus, open-drain data input/output. High-current sink only if I2C Fast-mode Plus is selected in the I/O configuration register. PIO0_6 -- General purpose digital input/output pin. SCK0 -- Serial clock for SPI0. PIO0_7 -- General purpose digital input/output pin (high-current output driver). CTS -- Clear To Send input for UART. PIO0_8 -- General purpose digital input/output pin. MISO0 -- Master In Slave Out for SPI0. CT16B0_MAT0 -- Match output 0 for 16-bit timer 0. PIO0_9 -- General purpose digital input/output pin. MOSI0 -- Master Out Slave In for SPI0. CT16B0_MAT1 -- Match output 1 for 16-bit timer 0. SWCLK -- Serial wire clock. PIO0_10 -- General purpose digital input/output pin. SCK0 -- Serial clock for SPI0. CT16B0_MAT2 -- Match output 2 for 16-bit timer 0. R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO0_11 -- General purpose digital input/output pin. AD0 -- A/D converter, input 0. CT32B0_MAT3 -- Match output 3 for 32-bit timer 0. Port 1 -- Port 1 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 1 pins depends on the function selected through the IOCONFIG register block.
O O PIO0_2/SSEL0/ CT16B0_CAP0 10[3] yes I/O I/O I PIO0_3 14[3] yes I/O
I; PU I; PU
PIO0_4/SCL
15[4]
yes
I/O I/O
I; IA I; IA I; PU I; PU I; PU I; PU I; PU I; PU -
PIO0_5/SDA
16[4]
yes
I/O I/O
PIO0_6/SCK0 PIO0_7/CTS
23[3] 24[3]
yes yes
I/O I/O I/O I
PIO0_8/MISO0/ CT16B0_MAT0
27[3]
yes
I/O I/O O
PIO0_9/MOSI0/ CT16B0_MAT1
28[3]
yes
I/O I/O O
SWCLK/PIO0_10/ SCK0/ CT16B0_MAT2
29[3]
yes
I I/O I/O O
R/PIO0_11/ AD0/ CT32B0_MAT3
32[5]
yes
I/O I O
PIO1_0 to PIO1_11
LPC11CX2_CX4
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32-bit ARM Cortex-M0 microcontroller
Table 4. Symbol
LPC11C22/C24 pin description table Pin Start Type logic inputs yes I/O I I Reset Description state
[1]
R/PIO1_0/AD1/ CT32B1_CAP0
33[5]
I; PU I; PU I; PU I; PU I; PU -
R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO1_0 -- General purpose digital input/output pin. AD1 -- A/D converter, input 1. CT32B1_CAP0 -- Capture input 0 for 32-bit timer 1. R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO1_1 -- General purpose digital input/output pin. AD2 -- A/D converter, input 2. CT32B1_MAT0 -- Match output 0 for 32-bit timer 1. R -- Reserved. Configure for an alternate function in the IOCONFIG block. PIO1_2 -- General purpose digital input/output pin. AD3 -- A/D converter, input 3. CT32B1_MAT1 -- Match output 1 for 32-bit timer 1. SWDIO -- Serial wire debug input/output. PIO1_3 -- General purpose digital input/output pin. AD4 -- A/D converter, input 4. CT32B1_MAT2 -- Match output 2 for 32-bit timer 1. PIO1_4 -- General purpose digital input/output pin with 10 ns glitch filter. AD5 -- A/D converter, input 5. CT32B1_MAT3 -- Match output 3 for 32-bit timer 1. WAKEUP -- Deep power-down mode wake-up pin with 20 ns glitch filter. This pin must be pulled HIGH externally to enter Deep power-down mode and pulled LOW to exit Deep power-down mode. A LOW-going pulse as short as 50 ns wakes up the part. PIO1_5 -- General purpose digital input/output pin. RTS -- Request To Send output for UART. CT32B0_CAP0 -- Capture input 0 for 32-bit timer 0. PIO1_6 -- General purpose digital input/output pin. RXD -- Receiver input for UART. CT32B0_MAT0 -- Match output 0 for 32-bit timer 0. PIO1_7 -- General purpose digital input/output pin. TXD -- Transmitter output for UART. CT32B0_MAT1 -- Match output 1 for 32-bit timer 0. PIO1_8 -- General purpose digital input/output pin. CT16B1_CAP0 -- Capture input 0 for 16-bit timer 1. PIO1_10 -- General purpose digital input/output pin. AD6 -- A/D converter, input 6. CT16B1_MAT1 -- Match output 1 for 16-bit timer 1.
(c) NXP B.V. 2010. All rights reserved.
R/PIO1_1/AD2/ CT32B1_MAT0
34[5]
no
I/O I O
R/PIO1_2/AD3/ CT32B1_MAT1
35[5]
no
I/O I O
SWDIO/PIO1_3/ AD4/ CT32B1_MAT2
39[5]
no
I/O I/O I O
PIO1_4/AD5/ CT32B1_MAT3/ WAKEUP
40[5]
no
I/O I O I
PIO1_5/RTS/ CT32B0_CAP0
45[3]
no
I/O O I
I; PU I; PU I; PU I; PU I; PU -
PIO1_6/RXD/ CT32B0_MAT0
46[3]
no
I/O I O
PIO1_7/TXD/ CT32B0_MAT1
47[3]
no
I/O O O
PIO1_8/ CT16B1_CAP0 PIO1_10/AD6/ CT16B1_MAT1
9[3] 30[5]
no no
I/O I I/O I O
LPC11CX2_CX4
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32-bit ARM Cortex-M0 microcontroller
Table 4. Symbol
LPC11C22/C24 pin description table Pin Start Type logic inputs no I/O I Reset Description state
[1]
PIO1_11/AD7 PIO2_0 to PIO2_11
42[5]
I; PU -
PIO1_11 -- General purpose digital input/output pin. AD7 -- A/D converter, input 7. Port 2 -- Port 2 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 2 pins depends on the function selected through the IOCONFIG register block.
PIO2_0/DTR/ SSEL1
2[3]
no
I/O I/O I/O
I; PU I; PU I; PU I; PU I; PU I; PU I; PU I; PU I; PU -
PIO2_0 -- General purpose digital input/output pin. DTR -- Data Terminal Ready output for UART. SSEL1 -- Slave Select for SPI1. PIO2_1 -- General purpose digital input/output pin. DSR -- Data Set Ready input for UART. SCK1 -- Serial clock for SPI1. PIO2_2 -- General purpose digital input/output pin. DCD -- Data Carrier Detect input for UART. MISO1 -- Master In Slave Out for SPI1. PIO2_3 -- General purpose digital input/output pin. RI -- Ring Indicator input for UART. MOSI1 -- Master Out Slave In for SPI1. PIO2_6 -- General purpose digital input/output pin. PIO2_7 -- General purpose digital input/output pin. PIO2_8 -- General purpose digital input/output pin. PIO2_10 -- General purpose digital input/output pin. PIO2_11 -- General purpose digital input/output pin. SCK0 -- Serial clock for SPI0. Port 3 -- Port 3 is a 12-bit I/O port with individual direction and function controls for each bit. The operation of port 3 pins depends on the function selected through the IOCONFIG register block. Pins PIO3_4 to PIO3_11 are not available.
PIO2_1/DSR/SCK1
13[3]
no
I/O I I/O
PIO2_2/DCD/ MISO1
26[3]
no
I/O I I/O
PIO2_3/RI/MOSI1
38[3]
no
I/O I I/O
PIO2_6 PIO2_7 PIO2_8 PIO2_10 PIO2_11/SCK0 PIO3_0 to PIO3_3
1[3] 11[3] 12[3] 25[3] 31[3]
no no no no no
I/O I/O I/O I/O I/O I/O
PIO3_0/DTR PIO3_1/DSR PIO3_2/DCD PIO3_3/RI CANL CANH STB VDD_CAN VCC
LPC11CX2_CX4
36[3] 37[3] 43[3] 48[3] 18 19 22 17 20
no no no no no no no -
I/O O I/O I I/O I I/O I I/O I/O I -
I; PU I; PU I; PU I; PU -
PIO3_0 -- General purpose digital input/output pin. DTR -- Data Terminal Ready output for UART. PIO3_1 -- General purpose digital input/output pin. DSR -- Data Set Ready input for UART. PIO3_2 -- General purpose digital input/output pin. DCD -- Data Carrier Detect input for UART. PIO3_3 -- General purpose digital input/output pin. RI -- Ring Indicator input for UART. LOW-level CAN bus line. HIGH-level CAN bus line. Silent mode control input for CAN transceiver (LOW = Normal mode, HIGH = silent mode). Supply voltage for I/O level of CAN transceiver. Supply voltage for CAN transceiver.
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LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
Table 4. Symbol
LPC11C22/C24 pin description table Pin Start Type logic inputs I I O I Reset Description state
[1]
GND VDD XTALIN XTALOUT VSS
[1] [2]
21 8; 44 6[7] 7[7] 5; 41
-
Ground for CAN transceiver. Supply voltage to the internal regulator, the external rail, and the ADC. Also used as the ADC reference voltage. Input to the oscillator circuit and internal clock generator circuits. Input voltage must not exceed 1.8 V. Output from the oscillator amplifier. Ground.
Pin state at reset for default function: I = Input; O = Output; PU = internal pull-up enabled; IA = inactive, no pull-up/down enabled. See Figure 26 for reset pad configuration. RESET functionality is not available in Deep power-down mode. Use the WAKEUP pin to reset the chip and wake up from Deep power-down mode. An external pull-up resistor is required on this pin for the Deep power-down mode. 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis (see Figure 25). I2C-bus pads compliant with the I2C-bus specification for I2C standard mode and I2C Fast-mode Plus. 5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors, configurable hysteresis, and analog input. When configured as a ADC input, digital section of the pad is disabled and the pin is not 5 V tolerant (see Figure 25). 5 V tolerant digital I/O pad without pull-up/pull-down resistors. When the system oscillator is not used, connect XTALIN and XTALOUT as follows: XTALIN can be left floating or can be grounded (grounding is preferred to reduce susceptibility to noise). XTALOUT should be left floating.
[3] [4] [5] [6] [7]
LPC11CX2_CX4
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LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
7. Functional description
7.1 ARM Cortex-M0 processor
The ARM Cortex-M0 is a general purpose, 32-bit microprocessor, which offers high performance and very low power consumption.
7.2 On-chip flash program memory
The LPC11Cx2/Cx4 contain 32 kB (LPC11C14/C24) or 16 kB (LPC11C12/C22) of on-chip flash program memory.
7.3 On-chip SRAM
The LPC11Cx2/Cx4 contain a total of 8 kB on-chip static RAM data memory.
7.4 Memory map
The LPC11Cx2/Cx4 incorporates several distinct memory regions, shown in the following figures. Figure 4 shows the overall map of the entire address space from the user program viewpoint following reset. The interrupt vector area supports address remapping. The AHB peripheral area is 2 megabyte in size, and is divided to allow for up to 128 peripherals. The APB peripheral area is 512 kB in size and is divided to allow for up to 32 peripherals. Each peripheral of either type is allocated 16 kilobytes of space. This allows simplifying the address decoding for each peripheral.
LPC11CX2_CX4
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LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
4 GB
LPC11Cx2/Cx4
0xFFFF FFFF reserved 0xE010 0000 private peripheral bus reserved 0x5020 0000 AHB peripherals 0x5000 0000 0xE000 0000 12-15 8-11 4-7 0-3 reserved
AHB peripherals
0x5020 0000
16 - 127 reserved 0x5004 0000 GPIO PIO3 GPIO PIO2 GPIO PIO1 GPIO PIO0 APB peripherals 23 - 31 reserved 0x4005 C000 0x5003 0000 0x5002 0000 0x5001 0000 0x5000 0000 0x4008 0000
0x4008 0000 1 GB APB peripherals 0x4000 0000
22 21 20 19
SPI1 reserved
0x4005 8000 0x4005 4000
C_CAN reserved system control IOCONFIG SPI0 flash controller PMU 10 - 13 reserved
0x4005 0000 0x4004 C000 0x4004 8000 0x4004 4000 0x4004 0000 0x4003 C000 0x4003 8000 0x4002 8000
reserved
18 17
0.5 GB reserved
0x2000 0000
16 15 14
0x1FFF 4000 16 kB boot ROM 0x1FFF 0000 9 8 reserved 7 6 0x1000 2000 8 kB SRAM 0x1000 0000 5 4 3 2 reserved 1 0 0x0000 8000 32 kB on-chip flash (LPC11CX4) 0 GB 16 kB on-chip flash (LPC11Cx2) 0x0000 4000 0x0000 0000
reserved reserved ADC 32-bit counter/timer 1 32-bit counter/timer 0 16-bit counter/timer 1 16-bit counter/timer 0 UART WDT I2C-bus 0x0000 00C0
0x4002 4000 0x4002 0000 0x4001 C000 0x4001 8000 0x4001 4000 0x4001 0000 0x4000 C000 0x4000 8000 0x4000 4000 0x4000 0000
active interrupt vectors
0x0000 0000
002aaf268
Fig 4.
LPC11Cx2/Cx4 memory map
7.5 Nested Vectored Interrupt Controller (NVIC)
The Nested Vectored Interrupt Controller (NVIC) is an integral part of the Cortex-M0. The tight coupling to the CPU allows for low interrupt latency and efficient processing of late arriving interrupts.
7.5.1 Features
* Controls system exceptions and peripheral interrupts. * In the LPC11Cx2/Cx4, the NVIC supports 32 vectored interrupts including 13 inputs to
the start logic from individual GPIO pins.
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LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
* Four programmable interrupt priority levels, with hardware priority level masking. * Software interrupt generation.
7.5.2 Interrupt sources
Each peripheral device has one interrupt line connected to the NVIC but may have several interrupt flags. Individual interrupt flags may also represent more than one interrupt source. Any GPIO pin (total of 40 pins (LPC11C12/C14) or 36 pins (LPC11C22/C24)) regardless of the selected function, can be programmed to generate an interrupt on a level, or rising edge or falling edge, or both.
7.6 IOCONFIG block
The IOCONFIG block allows selected pins of the microcontroller to have more than one function. Configuration registers control the multiplexers to allow connection between the pin and the on-chip peripherals. Peripherals should be connected to the appropriate pins prior to being activated and prior to any related interrupt(s) being enabled. Activity of any enabled peripheral function that is not mapped to a related pin should be considered undefined.
7.7 Fast general purpose parallel I/O
Device pins that are not connected to a specific peripheral function are controlled by the GPIO registers. Pins may be dynamically configured as inputs or outputs. Multiple outputs can be set or cleared in one write operation. LPC11Cx2/Cx4 use accelerated GPIO functions:
* GPIO registers are a dedicated AHB peripheral so that the fastest possible I/O timing
can be achieved.
* Entire port value can be written in one instruction.
Additionally, any GPIO pin (total of 40 pins (LPC11C12/C14) or 36 pins (LPC11C22/C24)) providing a digital function can be programmed to generate an interrupt on a level, a rising or falling edge, or both.
7.7.1 Features
* Bit level port registers allow a single instruction to set or clear any number of bits in
one write operation.
* Direction control of individual bits. * All GPIO pins default to inputs with pull-ups enabled after reset except for the I2C-bus
true open-drain pins PIO0_4 and PIO0_5.
* Pull-up/pull-down resistor configuration can be programmed through the IOCONFIG
block for each GPIO pin (except PIO0_4 and PIO0_5).
7.8 UART
The LPC11Cx2/Cx4 contain one UART.
LPC11CX2_CX4
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LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
Support for RS-485/9-bit mode allows both software address detection and automatic address detection using 9-bit mode. The UART includes a fractional baud rate generator. Standard baud rates such as 115200 Bd can be achieved with any crystal frequency above 2 MHz.
7.8.1 Features
* * * * *
Maximum UART data bit rate of 3.125 Mbit/s. 16 Byte Receive and Transmit FIFOs. Register locations conform to 16C550 industry standard. Receiver FIFO trigger points at 1 B, 4 B, 8 B, and 14 B. Built-in fractional baud rate generator covering wide range of baud rates without a need for external crystals of particular values.
* FIFO control mechanism that enables software flow control implementation. * Support for RS-485/9-bit mode. * Support for modem control. 7.9 SPI serial I/O controller
The LPC11Cx2/Cx4 contain two SPI controllers. Both SPI controllers support SSP features. The SPI controller is capable of operation on a SSP, 4-wire SSI, or Microwire bus. It can interact with multiple masters and slaves on the bus. Only a single master and a single slave can communicate on the bus during a given data transfer. The SPI supports full duplex transfers, with frames of 4 bits to 16 bits of data flowing from the master to the slave and from the slave to the master. In practice, often only one of these data flows carries meaningful data.
7.9.1 Features
* Maximum SPI speed of 25 Mbit/s (master) or 4.17 Mbit/s (slave) (in SSP mode) * Compatible with Motorola SPI, 4-wire Texas Instruments SSI, and National
Semiconductor Microwire buses
* * * *
Synchronous serial communication Master or slave operation 8-frame FIFOs for both transmit and receive 4-bit to 16-bit frame
7.10 I2C-bus serial I/O controller
The LPC11Cx2/Cx4 contain one I2C-bus controller. The I2C-bus is bidirectional for inter-IC control using only two wires: a Serial CLock line (SCL) and a Serial DAta line (SDA). Each device is recognized by a unique address and can operate as either a receiver-only device (e.g., an LCD driver) or a transmitter with the capability to both receive and send information (such as memory). Transmitters and/or
LPC11CX2_CX4
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LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
receivers can operate in either master or slave mode, depending on whether the chip has to initiate a data transfer or is only addressed. The I2C is a multi-master bus and can be controlled by more than one bus master connected to it.
7.10.1 Features
* The I2C-interface is a standard I2C-bus compliant interface with open-drain pins. The
I2C-bus interface also supports Fast-mode Plus with bit rates up to 1 Mbit/s.
* * * * *
Easy to configure as master, slave, or master/slave. Programmable clocks allow versatile rate control. Bidirectional data transfer between masters and slaves. Multi-master bus (no central master). Arbitration between simultaneously transmitting masters without corruption of serial data on the bus. one serial bus.
* Serial clock synchronization allows devices with different bit rates to communicate via * Serial clock synchronization can be used as a handshake mechanism to suspend and
resume serial transfer.
* The I2C-bus can be used for test and diagnostic purposes. * The I2C-bus controller supports multiple address recognition and a bus monitor mode. 7.11 C_CAN controller
Controller Area Network (CAN) is the definition of a high performance communication protocol for serial data communication. The C_CAN controller is designed to provide a full implementation of the CAN protocol according to the CAN Specification Version 2.0B. The C_CAN controller allows to build powerful local networks with low-cost multiplex wiring by supporting distributed real-time control with a very high level of security. On-chip C_CAN drivers provide an API for initialization and communication using CAN and CANopen standards.
7.11.1 Features
* * * * * * *
Conforms to protocol version 2.0 parts A and B. Supports bit rate of up to 1 Mbit/s. Supports 32 Message Objects. Each Message Object has its own identifier mask. Provides programmable FIFO mode (concatenation of Message Objects). Provides maskable interrupts. Supports Disabled Automatic Retransmission (DAR) mode for time-triggered CAN applications.
* Provides programmable loop-back mode for self-test operation. * The C_CAN API includes the following functions:
- C_CAN set-up and initialization - C_CAN send and receive messages
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32-bit ARM Cortex-M0 microcontroller
- C_CAN status - CANopen object dictionary - CANopen SDO expedited communication - CANopen SDO segmented communication primitives - CANopen SDO fall-back handler
* Flash ISP programming via C_CAN supported.
7.11.2 On-chip, high-speed CAN transceiver
Remark: The on-chip CAN transceiver is available on parts LPC11C22/C24 only. Compared to the LPC11C12/C14, the LPC11C22/C24 supports fewer GPIO functions, and in addition, one counter/timer match function is removed to allow interfacing the CAN high-speed transceiver to the CAN bus. See Table 4 and Figure 1. 7.11.2.1 Features
* * * *
7.11.2.2
Data rates of up to 1 Mbit/s Fully ISO 11898-2 compliant Undervoltage detection and thermal protection Low ElectroMagnetic Emission (EME) and high ElectroMagnetic Immunity (EMI)
Normal mode A LOW level on pin STB selects Normal mode. In this mode, the transceiver is able to transmit and receive data via the bus lines CANH and CANL (see Figure 28). The differential receiver converts the analog data on the bus lines into digital data which are received by the CAN_RXD input of the C_CAN controller.
7.11.2.3
Silent mode A HIGH level on pin STB selects Silent mode. In Silent mode the transmitter is disabled, releasing the bus pins to recessive state. All other functions, including the receiver, continue to operate as in Normal mode. Silent mode can be used to prevent a faulty C_CAN controller from disrupting all network communications.
7.11.2.4
Undervoltage protection Should VCC or VDD_CAN drop below their respective undervoltage detection levels (Vuvd(VCC) and Vuvd (VDD_CAN); see Table 8), the transceiver will switch off and disengage from the bus (zero load) until VCC and VDD_CAN have recovered.
7.11.2.5
Thermal protection The output drivers are protected against overtemperature conditions. If the virtual junction temperature exceeds the shutdown junction temperature, Tj(sd) (see Table 8), the output drivers will be disabled until the virtual junction temperature falls below Tj(sd).
7.11.2.6
Time-out function A `TXD dominant time-out' timer is started when the CAN_TXD signal of the C_CAN controller is set LOW. If the LOW state on the CAN_TXD signal persists for longer than tto(dom)TXD, the transmitter is disabled, releasing the bus lines to recessive state. This function prevents a hardware and/or software application failure from driving the bus lines
LPC11CX2_CX4
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32-bit ARM Cortex-M0 microcontroller
to a permanent dominant state (blocking all network communications). The TXD dominant time-out timer is reset when the CAN_TXD signal is set HIGH. The TXD dominant time-out time also defines the minimum possible bit rate of 40 kbit/s.
7.12 10-bit ADC
The LPC11Cx2/Cx4 contains one ADC. The ADC is a single 10-bit successive approximation ADC with eight channels.
7.12.1 Features
* * * * * * * *
10-bit successive approximation ADC. Input multiplexing among 8 pins. Power-down mode. Measurement range 0 V to VDD. 10-bit conversion time 2.44 s. Burst conversion mode for single or multiple inputs. Optional conversion on transition of input pin or timer match signal. Individual result registers for each ADC channel to reduce interrupt overhead.
7.13 General purpose external event counter/timers
The LPC11Cx2/Cx4 includes two 32-bit counter/timers and two 16-bit counter/timers. The counter/timer is designed to count cycles of the system derived clock. It can optionally generate interrupts or perform other actions at specified timer values, based on four match registers. Each counter/timer also includes one capture input to trap the timer value when an input signal transitions, optionally generating an interrupt.
7.13.1 Features
* A 32-bit/16-bit timer/counter with a programmable 32-bit/16-bit prescaler. * Counter or timer operation. * One capture channel per timer, that can take a snapshot of the timer value when an
input signal transitions. A capture event may also generate an interrupt.
* Four match registers per timer that allow:
- Continuous operation with optional interrupt generation on match. - Stop timer on match with optional interrupt generation. - Reset timer on match with optional interrupt generation.
* Up to four external outputs corresponding to match registers, with the following
capabilities: - Set LOW on match. - Set HIGH on match. - Toggle on match. - Do nothing on match.
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7.14 System tick timer
The ARM Cortex-M0 includes a system tick timer (SYSTICK) that is intended to generate a dedicated SYSTICK exception at a fixed time interval (typically 10 ms).
7.15 Watchdog timer
The purpose of the watchdog is to reset the microcontroller within a selectable time period.
7.15.1 Features
* Internally resets chip if not periodically reloaded. * Debug mode. * Enabled by software but requires a hardware reset or a watchdog reset/interrupt to be
disabled.
* * * *
Incorrect/Incomplete feed sequence causes reset/interrupt if enabled. Flag to indicate watchdog reset. Programmable 24-bit timer with internal prescaler. Selectable time period from (Tcy(WDCLK) 256 4) to (Tcy(WDCLK) 224 4) in multiples of Tcy(WDCLK) 4. (IRC), the Watchdog oscillator, or the main clock. This gives a wide range of potential timing choices of Watchdog operation under different power reduction conditions. It also provides the ability to run the WDT from an entirely internal source that is not dependent on an external crystal and its associated components and wiring for increased reliability.
* The Watchdog Clock (WDCLK) source can be selected from the Internal RC oscillator
7.16 Clocking and power control
7.16.1 Crystal oscillators
The LPC11Cx2/Cx4 include three independent oscillators. These are the system oscillator, the Internal RC oscillator (IRC), and the Watchdog oscillator. Each oscillator can be used for more than one purpose as required in a particular application. Following reset, the LPC11Cx2/Cx4 will operate from the Internal RC oscillator until switched by software. This allows systems to operate without any external crystal and the bootloader code to operate at a known frequency. See Figure 5 for an overview of the LPC11Cx2/Cx4 clock generation.
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SYSTEM CLOCK DIVIDER
system clock
AHB clock 0 (system)
18
AHB clocks 1 to 18 (memories and peripherals)
SYSAHBCLKCTRL[1:18] (AHB clock enable)
IRC oscillator
SPI0 PERIPHERAL CLOCK DIVIDER main clock UART PERIPHERAL CLOCK DIVIDER SPI1 PERIPHERAL CLOCK DIVIDER
SPI0
watchdog oscillator
UART
SPI1
MAINCLKSEL (main clock select) IRC oscillator SYSTEM PLL system oscillator IRC oscillator
SYSPLLCLKSEL (system PLL clock select)
WDT CLOCK DIVIDER watchdog oscillator WDTUEN (WDT clock update enable) IRC oscillator system oscillator watchdog oscillator
WDT
CLKOUT PIN CLOCK DIVIDER
CLKOUT pin
CLKOUTUEN (CLKOUT update enable)
002aae514
Fig 5.
LPC11Cx2/Cx4 clock generation block diagram
7.16.1.1
Internal RC oscillator The IRC may be used as the clock source for the WDT, and/or as the clock that drives the PLL and subsequently the CPU. The nominal IRC frequency is 12 MHz. The IRC is trimmed to 1 % accuracy over the entire voltage and temperature range. Upon power-up or any chip reset, the LPC11Cx2/Cx4 use the IRC as the clock source. Software may later switch to one of the other available clock sources.
7.16.1.2
System oscillator The system oscillator can be used as the clock source for the CPU, with or without using the PLL. The system oscillator operates at frequencies of 1 MHz to 25 MHz. This frequency can be boosted to a higher frequency, up to the maximum CPU operating frequency, by the system PLL.
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7.16.1.3
Watchdog oscillator The watchdog oscillator can be used as a clock source that directly drives the CPU, the watchdog timer, or the CLKOUT pin. The watchdog oscillator nominal frequency is programmable between 7.8 kHz and 1.7 MHz. The frequency spread over processing and temperature is 40 % (see Table 15).
7.16.2 System PLL
The PLL accepts an input clock frequency in the range of 10 MHz to 25 MHz. The input frequency is multiplied up to a high frequency with a Current Controlled Oscillator (CCO). The multiplier can be an integer value from 1 to 32. The CCO operates in the range of 156 MHz to 320 MHz, so there is an additional divider in the loop to keep the CCO within its frequency range while the PLL is providing the desired output frequency. The output divider may be set to divide by 2, 4, 8, or 16 to produce the output clock. The PLL output frequency must be lower than 100 MHz. Since the minimum output divider value is 2, it is insured that the PLL output has a 50 % duty cycle. The PLL is turned off and bypassed following a chip reset and may be enabled by software. The program must configure and activate the PLL, wait for the PLL to lock, and then connect to the PLL as a clock source. The PLL settling time is 100 s.
7.16.3 Clock output
The LPC11Cx2/Cx4 features a clock output function that routes the IRC oscillator, the system oscillator, the watchdog oscillator, or the main clock to an output pin.
7.16.4 Wake-up process
The LPC11Cx2/Cx4 begin operation at power-up and when awakened from Deep power-down mode by using the 12 MHz IRC oscillator as the clock source. This allows chip operation to resume quickly. If the system oscillator or the PLL is needed by the application, software will need to enable these features and wait for them to stabilize before they are used as a clock source.
7.16.5 Power control
The LPC11Cx2/Cx4 support a variety of power control features. There are three special modes of processor power reduction: Sleep mode, Deep-sleep mode, and Deep power-down mode. The CPU clock rate may also be controlled as needed by changing clock sources, reconfiguring PLL values, and/or altering the CPU clock divider value. This allows a trade-off of power versus processing speed based on application requirements. In addition, a register is provided for shutting down the clocks to individual on-chip peripherals, allowing fine tuning of power consumption by eliminating all dynamic power use in any peripherals that are not required for the application. Selected peripherals have their own clock divider which provides even better power control. 7.16.5.1 Sleep mode When Sleep mode is entered, the clock to the core is stopped. Resumption from the Sleep mode does not need any special sequence but re-enabling the clock to the ARM core. In Sleep mode, execution of instructions is suspended until either a reset or interrupt occurs. Peripheral functions continue operation during Sleep mode and may generate interrupts to cause the processor to resume execution. Sleep mode eliminates dynamic power used by the processor itself, memory systems and related controllers, and internal buses.
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7.16.5.2
Deep-sleep mode In Deep-sleep mode, the chip is in Sleep mode, and in addition all analog blocks are shut down. As an exception, the user has the option to keep the watchdog oscillator and the BOD circuit running for self-timed wake-up and BOD protection. Deep-sleep mode allows for additional power savings. Up to 13 pins total, see Table 3, serve as external wake-up pins to a dedicated start logic to wake up the chip from Deep-sleep mode. Unless the watchdog oscillator is selected to run in Deep-sleep mode, the clock source should be switched to IRC before entering Deep-sleep mode, because the IRC can be switched on and off glitch-free.
7.16.5.3
Deep power-down mode In Deep power-down mode, power is shut off to the entire chip with the exception of the WAKEUP pin. The LPC11Cx2/Cx4 can wake up from Deep power-down mode via the WAKEUP pin. When entering Deep power-down mode, an external pull-up resistor is required on the WAKEUP pin to hold it HIGH. The RESET pin must also be held HIGH to prevent it from floating while in Deep power-down mode.
7.17 System control
7.17.1 Start logic
The start logic connects external pins to corresponding interrupts in the NVIC. Each pin shown in Table 3 as input to the start logic has an individual interrupt in the NVIC interrupt vector table. The start logic pins can serve as external interrupt pins when the chip is running. In addition, an input signal on the start logic pins can wake up the chip from Deep-sleep mode when all clocks are shut down. The start logic must be configured in the system configuration block and in the NVIC before being used.
7.17.2 Reset
Reset has four sources on the LPC11Cx2/Cx4: the RESET pin, the Watchdog reset, power-on reset (POR), and the BrownOut Detection (BOD) circuit. The RESET pin is a Schmitt trigger input pin. Assertion of chip reset by any source, once the operating voltage attains a usable level, starts the IRC and initializes the flash controller. When the internal Reset is removed, the processor begins executing at address 0, which is initially the Reset vector mapped from the boot block. At that point, all of the processor and peripheral registers have been initialized to predetermined values. An external pull-up resistor is required on the RESET pin if Deep power-down mode is used.
7.17.3 Brownout detection
The LPC11Cx2/Cx4 includes four levels for monitoring the voltage on the VDD pin. If this voltage falls below one of the four selected levels, the BOD asserts an interrupt signal to the NVIC. This signal can be enabled for interrupt in the Interrupt Enable Register in the
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NVIC in order to cause a CPU interrupt; if not, software can monitor the signal by reading a dedicated status register. Four additional threshold levels can be selected to cause a forced reset of the chip.
7.17.4 Code security (Code Read Protection - CRP)
This feature of the LPC11Cx2/Cx4 allows user to enable different levels of security in the system so that access to the on-chip flash and use of the Serial Wire Debugger (SWD) and In-System Programming (ISP) can be restricted. When needed, CRP is invoked by programming a specific pattern into a dedicated flash location. IAP commands are not affected by the CRP. In addition, ISP entry via the PIO0_1 pin can be disabled without enabling CRP. For details see the LPC11Cx user manual. There are three levels of Code Read Protection: 1. CRP1 disables access to the chip via the SWD and allows partial flash update (excluding flash sector 0) using a limited set of the ISP commands. This mode is useful when CRP is required and flash field updates are needed but all sectors can not be erased. 2. CRP2 disables access to the chip via the SWD and only allows full flash erase and update using a reduced set of the ISP commands. 3. Running an application with level CRP3 selected fully disables any access to the chip via the SWD pins and the ISP. This mode effectively disables ISP override using PIO0_1 pin, too. It is up to the user's application to provide (if needed) flash update mechanism using IAP calls or call reinvoke ISP command to enable flash update via the UART.
CAUTION If level three Code Read Protection (CRP3) is selected, no future factory testing can be performed on the device.
In addition to the three CRP levels, sampling of pin PIO0_1 for valid user code can be disabled. For details see the LPC11Cx user manual.
7.17.5 Bootloader
The bootloader controls initial operation after reset and also provides the means to program the flash memory. This could be initial programming of a blank device, erasure and re-programming of a previously programmed device, or programming of the flash memory by the application program in a running system. The bootloader code is executed every time the part is reset or powered up. The loader can either execute the user application code or the ISP command handler via UART or C_CAN. A LOW level during reset applied to the PIO0_1 pin is considered as an external hardware request to start the ISP command handler. The state of PIO0_3 at reset determines whether the UART (PIO0_3 HIGH) or the C_CAN (PIO0_3 LOW) interface will be used.
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The C_CAN ISP command handler uses the CANopen protocol and data organization method. C_CAN ISP commands have the same functionality as UART ISP commands.
7.17.6 APB interface
The APB peripherals are located on one APB bus.
7.17.7 AHBLite
The AHBLite connects the CPU bus of the ARM Cortex-M0 to the flash memory, the main static RAM, and the Boot ROM.
7.17.8 External interrupt inputs
All GPIO pins can be level or edge sensitive interrupt inputs. In addition, start logic inputs serve as external interrupts (see Section 7.17.1).
7.18 Emulation and debugging
Debug functions are integrated into the ARM Cortex-M0. Serial wire debug with four breakpoints and two watchpoints is supported.
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8. Limiting values
Table 5. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134).[1] Symbol VDD VI IDD ISS Ilatch Tstg Tj(max) Ptot(pack) VESD Parameter supply voltage (core and external rail) input voltage supply current ground current I/O latch-up current storage temperature maximum junction temperature total power dissipation based on package heat transfer, not device power (per package) consumption electrostatic discharge human body model; voltage all pins except CAN on-chip transceiver pins CANL, CANH, STB, VDD_CAN, VCC, GND on LPC11C22/C24 pins CANH and CANL on LPC11C22/C24 pins STB, VDD_CAN, VCC, GND on LPC11C22/C24
[1] The following applies to the limiting values: a) This product includes circuitry specifically designed for the protection of its internal devices from the damaging effects of excessive static charge. Nonetheless, it is suggested that conventional precautions be taken to avoid applying greater than the rated maximum. b) Parameters are valid over operating temperature range unless otherwise specified. All voltages are with respect to VSS unless otherwise noted. [2] [3] [4] [5] Including voltage on outputs in 3-state mode. The peak current is limited to 25 times the corresponding maximum current. Dependent on package type. Human body model: equivalent to discharging a 100 pF capacitor through a 1.5 k series resistor.
[5]
Conditions on pins VDD 5 V tolerant I/O pins; only valid when the VDD supply voltage is present per supply pin per ground pin (0.5VDD) < VI < (1.5VDD); Tj < 125 C
[4] [2]
Min 1.8 0.5 65 6500
Max 3.6 +5.5 100 100 100 +150 150 1.5 +6500
Unit V V mA mA mA C C W V
[3] [3]
[5] [5]
8000 4000
+8000 +4000
V V
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9. Static characteristics
Table 6. Static characteristics Tamb = 40 C to +85 C, unless otherwise specified. Symbol VDD IDD Parameter supply voltage (core and external rail) supply current Conditions on pins VDD Active mode; code Min 1.8 Typ[1] 3.3 Max 3.6 Unit V
while(1){}
executed from flash system clock = 12 MHz VDD = 3.3 V system clock = 50 MHz VDD = 3.3 V Sleep mode; system clock = 12 MHz VDD = 3.3 V Deep-sleep mode; VDD = 3.3 V Deep power-down mode; VDD = 3.3 V Standard port pins, RESET IIL IIH LOW-level input current VI = 0 V; on-chip pull-up resistor disabled HIGH-level input current OFF-state output current input voltage output voltage HIGH-level input voltage LOW-level input voltage hysteresis voltage HIGH-level output voltage 2.0 V VDD 3.6 V; IOH = 4 mA 1.8 V VDD < 2.0 V; IOH = 3 mA VOL LOW-level output voltage 2.0 V VDD 3.6 V; IOL = 4 mA 1.8 V VDD < 2.0 V; IOL = 3 mA VI = VDD; on-chip pull-down resistor disabled VO = 0 V; VO = VDD; on-chip pull-up/down resistors disabled pin configured to provide a digital function output active
[11][12] [13] [2][3][5] [9] [2][10] [2][3][4] [5][6][7] [2][3][6] [5][7][8] [2][3][4] [5][6][7]
-
3 9 2
-
mA mA mA
-
6 220
-
A nA
-
0.5 0.5
10 10
nA nA
IOZ
-
0.5
10
nA
VI VO VIH VIL Vhys VOH
0 0 0.7VDD VDD 0.4 VDD 0.4 -
0.4 -
5.0 VDD 0.3VDD 0.4 0.4
V V V V V V V V V
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Table 6. Static characteristics ...continued Tamb = 40 C to +85 C, unless otherwise specified. Symbol IOH Parameter HIGH-level output current Conditions VOH = VDD 0.4 V; 2.0 V VDD 3.6 V 1.8 V VDD < 2.0 V IOL LOW-level output current VOL = 0.4 V 2.0 V VDD 3.6 V 1.8 V VDD < 2.0 V IOHS IOLS Ipd Ipu HIGH-level short-circuit VOH = 0 V output current LOW-level short-circuit output current pull-down current pull-up current VOL = VDD VI = 5 V VI = 0 V; 2.0 V VDD 3.6 V 1.8 V VDD < 2.0 V VDD < VI < 5 V High-drive output pin (PIO0_7) IIL IIH LOW-level input current VI = 0 V; on-chip pull-up resistor disabled HIGH-level input current OFF-state output current input voltage output voltage HIGH-level input voltage LOW-level input voltage hysteresis voltage HIGH-level output voltage 2.5 V VDD 3.6 V; IOH = 20 mA 1.8 V VDD < 2.5 V; IOH = 12 mA VOL LOW-level output voltage 2.0 V VDD 3.6 V; IOL = 4 mA 1.8 V VDD < 2.0 V; IOL = 3 mA IOH HIGH-level output current VOH = VDD 0.4 V; 2.5 V VDD 3.6 V 1.8 V VDD < 2.5 V VI = VDD; on-chip pull-down resistor disabled VO = 0 V; VO = VDD; on-chip pull-up/down resistors disabled pin configured to provide a digital function output active
[11][12] [13] [14]
Min 4 3 4 3 10 15 10 0 -
Typ[1] 50 50 50 0 0.5 0.5
Max 45 50 150 85 85 0 10 10
Unit mA mA mA mA mA mA A A A A nA nA
[14]
IOZ
-
0.5
10
nA
VI VO VIH VIL Vhys VOH
0 0 0.7VDD 0.4 VDD 0.4 VDD 0.4 20 12
-
5.0 VDD 0.3VDD 0.4 0.4 -
V V V V V V V V V mA mA
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Table 6. Static characteristics ...continued Tamb = 40 C to +85 C, unless otherwise specified. Symbol IOL Parameter LOW-level output current Conditions VOL = 0.4 V 2.0 V VDD 3.6 V 1.8 V VDD < 2.0 V IOLS Ipd Ipu LOW-level short-circuit output current pull-down current pull-up current VOL = VDD VI = 5 V VI = 0 V 2.0 V VDD 3.6 V 1.8 V VDD < 2.0 V VDD < VI < 5 V I2C-bus VIH VIL Vhys IOL pins (PIO0_4 and PIO0_5) HIGH-level input voltage LOW-level input voltage hysteresis voltage LOW-level output current VOL = 0.4 V; pins configured as standard mode pins 2.0 V VDD 3.6 V 1.8 V VDD < 2.0 V IOL LOW-level output current VOL = 0.4 V; I2C-bus pins configured as Fast-mode Plus pins 2.0 V VDD 3.6 V 1.8 V VDD < 2.0 V ILI Oscillator pins Vi(xtal) Vo(xtal)
[1] [2] [3] [4] [5] [6] [7] [8] [9]
[14]
Min 4 3 10 15 10 0 0.7VDD I2C-bus 4
Typ[1] 50 50 50 0 0.05VDD -
Max 50 150 85 85 0 0.3VDD -
Unit mA mA mA A A A A V V V mA
3 20
-
mA
16
[15]
2 10 1.8 1.8
4 22 1.95 1.95 A A V V
input leakage current
VI = VDD VI = 5 V
0.5 0.5
crystal input voltage crystal output voltage
Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply voltages. Tamb = 25 C. IDD measurements were performed with all pins configured as GPIO outputs driven LOW and pull-up resistors disabled. IRC enabled; system oscillator disabled; system PLL disabled. Pin CAN_RXD pulled LOW externally. BOD disabled. All peripherals disabled in the SYSAHBCLKCTRL register. Peripheral clocks to UART and SPI0/1 disabled in system configuration block. IRC disabled; system oscillator enabled; system PLL enabled. All oscillators and analog blocks turned off in the PDSLEEPCFG register; PDSLEEPCFG = 0x0000 18FF.
[10] WAKEUP pin pulled HIGH externally. [11] Including voltage on outputs in 3-state mode. [12] VDD supply voltage must be present.
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[13] 3-state outputs go into 3-state mode in Deep power-down mode. [14] Allowed as long as the current limit does not exceed the maximum current allowed by the device. [15] To VSS.
9.1 ADC characteristics
Table 7. ADC static characteristics Tamb = 40 C to +85 C unless otherwise specified; ADC frequency 4.5 MHz, VDD = 2.5 V to 3.6 V. Symbol VIA Cia ED EL(adj) EO EG ET Rvsi Ri
[1] [2] [3] [4] [5] [6] [7] [8]
Parameter analog input voltage analog input capacitance differential linearity error integral non-linearity offset error gain error absolute error voltage source interface resistance input resistance
Conditions
Min 0 [1][2] [3] [4] [5] [6]
Typ -
Max VDD 1 1 1.5 3.5 0.6 4 40 2.5
Unit V pF LSB LSB LSB % LSB k M
-
[7][8]
-
The ADC is monotonic, there are no missing codes. The differential linearity error (ED) is the difference between the actual step width and the ideal step width. See Figure 6. The integral non-linearity (EL(adj)) is the peak difference between the center of the steps of the actual and the ideal transfer curve after appropriate adjustment of gain and offset errors. See Figure 6. The offset error (EO) is the absolute difference between the straight line which fits the actual curve and the straight line which fits the ideal curve. See Figure 6. The gain error (EG) is the relative difference in percent between the straight line fitting the actual transfer curve after removing offset error, and the straight line which fits the ideal transfer curve. See Figure 6. The absolute error (ET) is the maximum difference between the center of the steps of the actual transfer curve of the non-calibrated ADC and the ideal transfer curve. See Figure 6. Tamb = 25 C; maximum sampling frequency fs = 4.5 MHz and analog input capacitance Cia = 1 pF. Input resistance Ri depends on the sampling frequency fs: Ri = 1 / (fs Cia).
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offset error EO 1023
gain error EG
1022
1021
1020
1019
1018
(2)
7 code out 6
(1)
5
(5)
4
(4)
3
(3)
2
1
1 LSB (ideal) 1018 1019 1020 1021 1022 1023 1024
0 1 offset error EO 2 3 4 5 6 7 VIA (LSBideal)
1 LSB =
VDD - VSS 1024
002aaf426
(1) Example of an actual transfer curve. (2) The ideal transfer curve. (3) Differential linearity error (ED). (4) Integral non-linearity (EL(adj)). (5) Center of a step of the actual transfer curve.
Fig 6.
ADC characteristics
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9.2 CAN on-chip, high-speed transceiver characteristics
Table 8. Static characteristics Tamb = 40 C to +85 C; VCC = 4.5 V to 5.5 V; RL = 60 ; unless otherwise specified; all voltages are defined with respect to ground; positive currents flow into the IC. Also see Figure 28. Symbol VCC ICC Parameter supply voltage supply current Silent mode Normal mode recessive dominant; CAN_TXD = LOW Vuvd(VCC) undervoltage detection voltage on pin VCC supply voltage supply current on pin VDD_CAN on pin VDD_CAN; Normal and Silent modes recessive; CAN_TXD = HIGH dominant; CAN_TXD = LOW Vuvd(VDD_CAN) undervoltage detection voltage on pin VDD_CAN Mode control input; pin STB VIH VIL IIH IIL VO(dom) HIGH-level input voltage LOW-level input voltage HIGH-level input current LOW-level input current dominant output voltage Voltage on pin STB = 0 V CAN_TXD = LOW; t < tto(dom)TXD pin CANH pin CANL Vdom(TX)sym VO(dif)bus transmitter dominant voltage Vdom(TX)sym = VCC VCANH VCANL symmetry bus differential output voltage recessive output voltage differential receiver threshold voltage differential receiver hysteresis voltage dominant output current CAN_TXD = LOW; t < tto(dom)TXD CAN_TXD = HIGH; recessive; no load Normal and Silent modes; CAN_TXD = HIGH; no load Normal and Silent modes Vcm(CAN)[1] = 12 V to +12 V Normal and Silent modes Vcm(CAN) = 12 V to +12 V CAN_TXD = LOW; t < tto(dom)TXD; VCC = 5 V pin CANH; VCANH = 0 V pin CANL; VCANL = 5 V/40 V
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Conditions
Min 4.5 0.1 2.5 20 3.5
Typ 1 5 50 -
Max 5.5 2.5 10 70 4.5
Unit V mA mA mA V
Supply; pin VCC
I/O level adapter supply; pin VDD_CAN VDD IDD 2.8 5.5 V
10 50 1.3
80 350 -
250 500 2.7
A A V
0.7VCC 0.3 1 1
4 0
VCC + 0.3 V 0.3VCC 10 +1 V A A
Bus lines; pins CANH and CANL 2.75 0.5 400 1.5 50 2 0.5 50 3.5 1.5 0 4.5 2.25 +400 3 +50 V V mV V mV V V mV
VO(rec) Vth(RX)dif Vhys(RX)dif IO(dom)
0.5VCC 3 0.7 120 0.9 400
120 40
70 70
40 120
mA mA
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Table 8. Static characteristics ...continued Tamb = 40 C to +85 C; VCC = 4.5 V to 5.5 V; RL = 60 ; unless otherwise specified; all voltages are defined with respect to ground; positive currents flow into the IC. Also see Figure 28. Symbol IO(rec) Parameter recessive output current Conditions Normal and Silent modes; CAN_TXD = HIGH; VCANH = VCANL = 27 V to +32 V VCC = 0 V; VCANH = VCANL = 5 V between VCANH and VCANL Min 5 Typ Max +5 Unit mA
IL Ri Ri Ri(dif) Ci(cm) Ci(dif) Tj(sd)
leakage current input resistance input resistance deviation differential input resistance common-mode input capacitance differential input capacitance shutdown junction temperature
5 9 3 19 -
0 15 0 30 190
+5 28 +3 52 20 10 -
A k % k pF pF C
Temperature protection
[1]
Vcm(CAN) is the common mode voltage of CANH and CANL.
Table 9. Dynamic characteristics Tamb = 40 C to +85 C; VCC = 4.5 V to 5.5 V; RL = 60 unless specified otherwise. All voltages are defined with respect to ground. Positive currents flow into the IC. Symbol tto(dom)TXD Parameter TXD dominant time-out time Conditions CAN_TXD = LOW; Normal mode Min 0.3 Typ 1 Max 12 Unit ms
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9.3 BOD static characteristics
Table 10. BOD static characteristics[1] Tamb = 25 C. Symbol Vth Parameter threshold voltage Conditions interrupt level 0 assertion de-assertion interrupt level 1 assertion de-assertion interrupt level 2 assertion de-assertion interrupt level 3 assertion de-assertion reset level 0 assertion de-assertion reset level 1 assertion de-assertion reset level 2 assertion de-assertion reset level 3 assertion de-assertion
[1]
Min -
Typ 1.65 1.80 2.22 2.35 2.52 2.66 2.80 2.90 1.46 1.63 2.06 2.15 2.35 2.43 2.63 2.71
Max -
Unit V V V V V V V V V V V V V V V V
Interrupt levels are selected by writing the level value to the BOD control register BODCTRL, see LPC11Cx user manual.
9.4 Power consumption
Power measurements in Active, Sleep, and Deep-sleep modes were performed under the following conditions (see LPC11Cx user manual):
* Configure all pins as GPIO with pull-up resistor disabled in the IOCONFIG block. * Configure GPIO pins as outputs using the GPIOnDIR registers. * Write 0 to all GPIOnDATA registers to drive the outputs LOW.
LPC11CX2_CX4
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12 IDD (mA) 8
002aaf390
48 MHz(2) 36 MHz(2) 24 MHz(2) 4 12 MHz(1)
0 1.8
2.4
3.0 VDD (V)
3.6
Conditions: Tamb = 25 C; active mode entered executing code while(1){} from flash; all peripherals disabled in the SYSAHBCLKCTRL register (SYSAHBCLKCTRL = 0x1F); all peripheral clocks disabled; internal pull-up resistors disabled; BOD disabled; pin CAN_RXD pulled LOW externally. (1) System oscillator and system PLL disabled; IRC enabled. (2) System oscillator and system PLL enabled; IRC disabled.
Fig 7.
Active mode: Typical supply current IDD versus supply voltage VDD for different system clock frequencies
12 IDD (mA) 8
002aaf391
48 MHz(2)
36 MHz(2) 24 MHz(2)
4
12 MHz(1)
0 -40
-15
10
35
60 85 temperature (C)
Conditions: VDD = 3.3 V; active mode entered executing code while(1){} from flash; all peripherals disabled in the SYSAHBCLKCTRL register (SYSAHBCLKCTRL = 0x1F); all peripheral clocks disabled; internal pull-up resistors disabled; BOD disabled; pin CAN_RXD pulled LOW externally. (1) System oscillator and system PLL disabled; IRC enabled. (2) System oscillator and system PLL enabled; IRC disabled.
Fig 8.
Active mode: Typical supply current IDD versus temperature for different system clock frequencies
LPC11CX2_CX4
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32-bit ARM Cortex-M0 microcontroller
8 IDD (mA) 6 36 MHz(2) 4
002aaf392
48 MHz(2)
24 MHz(2)
12 MHz(1) 2
0 -40
-15
10
35
60 85 temperature (C)
Conditions: VDD = 3.3 V; sleep mode entered from flash; all peripherals disabled in the SYSAHBCLKCTRL register (SYSAHBCLKCTRL = 0x1F); all peripheral clocks disabled; internal pull-up resistors disabled; BOD disabled; pin CAN_RXD pulled LOW externally. (1) System oscillator and system PLL disabled; IRC enabled. (2) System oscillator and system PLL enabled; IRC disabled.
Fig 9.
Sleep mode: Typical supply current IDDversus temperature for different system clock frequencies
40 IDD (A) 30 3.6 V 3.3 V 2.0 V 1.8 V
002aaf394
20
10
0 -40
-15
10
35
60 85 temperature (C)
Conditions: BOD disabled; all oscillators and analog blocks disabled in the PDSLEEPCFG register (PDSLEEPCFG = 0x0000 18FF); pin CAN_RXD pulled LOW externally.
Fig 10. Deep-sleep mode: Typical supply current IDD versus temperature for different supply voltages VDD
LPC11CX2_CX4
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0.8 IDD (A) 0.6 VDD = 3.6 V 3.3 V 2.0 V 1.8 V
002aaf457
0.4
0.2
0 -40
-15
10
35
60 85 temperature (C)
Fig 11. Deep power-down mode: Typical supply current IDD versus temperature for different supply voltages VDD
LPC11CX2_CX4
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9.5 Peripheral power consumption
The supply current per peripheral is measured as the difference in supply current between the peripheral block enabled and the peripheral block disabled in the SYSAHBCLKCFG and PDRUNCFG (for analog blocks) registers. All other blocks are disabled in both registers and no code is executed. Measured on a typical sample at Tamb = 25 C. Unless noted otherwise, the system oscillator and PLL are running in both measurements. The supply currents are shown for system clock frequencies of 12 MHz and 48 MHz.
Table 11. Peripheral Power consumption for individual analog and digital blocks Typical supply current in mA n/a IRC System oscillator at 12 MHz Watchdog oscillator at 500 kHz/2 BOD Main PLL ADC CLKOUT CT16B0 CT16B1 CT32B0 CT32B1 GPIO 0.27 0.22 0.004 12 MHz 48 MHz System oscillator running; PLL off; independent of main clock frequency. IRC running; PLL off; independent of main clock frequency. System oscillator running; PLL off; independent of main clock frequency. Independent of main clock frequency. Notes
0.051 -
0.21 0.08 0.12 0.02 0.02 0.02 0.02 0.23
0.29 0.47 0.06 0.06 0.07 0.06 0.88
Main clock divided by 4 in the CLKOUTDIV register.
GPIO pins configured as outputs and set to LOW. Direction and pin state are maintained if the GPIO is disabled in the SYSAHBCLKCFG register.
IOCONFIG I2C ROM SPI0 SPI1 UART WDT
-
0.03 0.04 0.04 0.12 0.12 0.22 0.02
0.10 0.13 0.15 0.45 0.45 0.82 0.06 Main clock selected as clock source for the WDT.
LPC11CX2_CX4
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9.6 Electrical pin characteristics
3.6 VOH (V) 3.2 T = 85 C 25 C -40 C
002aae990
2.8
2.4
2 0 10 20 30 40 50 IOH (mA) 60
Conditions: VDD = 3.3 V; on pin PIO0_7.
Fig 12. High-drive output: Typical HIGH-level output voltage VOH versus HIGH-level output current IOH.
60 IOL (mA) 40 T = 85 C 25 C -40 C
002aaf019
20
0 0 0.2 0.4 VOL (V) 0.6
Conditions: VDD = 3.3 V; on pins PIO0_4 and PIO0_5.
Fig 13. I2C-bus pins (high current sink): Typical LOW-level output current IOL versus LOW-level output voltage VOL
LPC11CX2_CX4
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15 IOL (mA) 10 T = 85 C 25 C -40 C
002aae991
5
0 0 0.2 0.4 VOL (V) 0.6
Conditions: VDD = 3.3 V; standard port pins and PIO0_7.
Fig 14. Typical LOW-level output current IOL versus LOW-level output voltage VOL
3.6 VOH (V) 3.2
002aae992
T = 85 C 25 C -40 C
2.8
2.4
2 0 8 16 IOH (mA) 24
Conditions: VDD = 3.3 V; standard port pins.
Fig 15. Typical HIGH-level output voltage VOH versus HIGH-level output source current IOH
LPC11CX2_CX4
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10 Ipu (A) -10
002aae988
-30 T = 85 C 25 C -40 C
-50
-70
0
1
2
3
4 VI (V)
5
Conditions: VDD = 3.3 V; standard port pins.
Fig 16. Typical pull-up current Ipu versus input voltage VI
80 Ipd (A) 60 T = 85 C 25 C -40 C
002aae989
40
20
0 0 1 2 3 4 VI (V) 5
Conditions: VDD = 3.3 V; standard port pins.
Fig 17. Typical pull-down current Ipd versus input voltage VI
LPC11CX2_CX4
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10. Dynamic characteristics
10.1 Flash memory
Table 12. Flash characteristics Tamb = 40 C to +85 C, unless otherwise specified. Symbol Nendu tret ter Parameter endurance retention time erase time powered unpowered sector or multiple consecutive sectors
[2]
Conditions
[1]
Min 10000 10 20 95
Typ 100000 100
Max 105
Unit cycles years years ms
tprog
[1] [2]
programming time
0.95
1
1.05
ms
Number of program/erase cycles. Programming times are given for writing 256 bytes from RAM to the flash. Data must be written to the flash in blocks of 256 bytes.
10.2 External clock
Table 13. Dynamic characteristic: external clock Tamb = 40 C to +85 C; VDD over specified ranges.[1] Symbol fosc Tcy(clk) tCHCX tCLCX tCLCH tCHCL
[1] [2]
Parameter oscillator frequency clock cycle time clock HIGH time clock LOW time clock rise time clock fall time
Conditions
Min 1 40 Tcy(clk) 0.4 Tcy(clk) 0.4 -
Typ[2] -
Max 25 1000 5 5
Unit MHz ns ns ns ns ns
Parameters are valid over operating temperature range unless otherwise specified. Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply voltages.
tCHCL
tCLCX Tcy(clk)
tCHCX tCLCH
002aaa907
Fig 18. External clock timing (with an amplitude of at least Vi(RMS) = 200 mV)
LPC11CX2_CX4
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10.3 Internal oscillators
Table 14. Dynamic characteristic: internal oscillators Tamb = 40 C to +85 C; 2.7 V VDD 3.6 V.[1] Symbol fosc(RC)
[1] [2]
Parameter
Conditions
Min 11.88
Typ[2] 12
Max 12.12
Unit MHz
internal RC oscillator frequency -
Parameters are valid over operating temperature range unless otherwise specified. Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply voltages.
12.15 f (MHz) 12.05
002aaf403
VDD = 3.6 V 3.3 V 3.0 V 2.7 V 2.4 V 2.0 V
11.95
11.85 -40
-15
10
35
60 85 temperature (C)
Conditions: Frequency values are typical values. 12 MHz 1 % accuracy is guaranteed for 2.7 V VDD 3.6 V and Tamb = 40 C to +85 C. Variations between parts may cause the IRC to fall outside the 12 MHz 1 % accuracy specification for voltages below 2.7 V.
Fig 19. Internal RC oscillator frequency vs. temperature Table 15. fosc(int) Dynamic characteristics: Watchdog oscillator Conditions
[2][3]
Symbol Parameter
Min -
Typ[1] 7.8 1700
Max -
Unit kHz kHz
internal oscillator DIVSEL = 0x1F, FREQSEL = 0x1 frequency in the WDTOSCCTRL register; DIVSEL = 0x00, FREQSEL = 0xF in the WDTOSCCTRL register
[2][3]
[1] [2] [3]
Typical ratings are not guaranteed. The values listed are at room temperature (25 C), nominal supply voltages. The typical frequency spread over processing and temperature (Tamb = 40 C to +85 C) is 40 %. See the LPC11Cx user manual.
LPC11CX2_CX4
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10.4 I/O pins
Table 16. Dynamic characteristic: I/O pins[1] Tamb = 40 C to +85 C; 3.0 V VDD 3.6 V. Symbol tr Parameter rise time Conditions pin configured as output pin configured as output Min 3.0 Typ Max 5.0 Unit ns
tf
fall time
2.5
-
5.0
ns
[1]
Applies to standard port pins and RESET pin.
10.5 I2C-bus
Table 17. Dynamic characteristic: I2C-bus pins[1] Tamb = 40 C to +85 C.[2] Symbol fSCL Parameter SCL clock frequency Conditions Standard-mode Fast-mode Fast-mode Plus tf fall time
[4][5][6][7]
Min 0 0 0 -
Max 100 400 1 300
Unit kHz kHz MHz ns
of both SDA and SCL signals Standard-mode Fast-mode Fast-mode Plus
20 + 0.1 Cb 4.7 1.3 0.5 4.0 0.6 0.26 0 0 0 250 100 50
300 120 -
ns ns s s s s s s s s s ns ns ns
tLOW
LOW period of the SCL clock
Standard-mode Fast-mode Fast-mode Plus Standard-mode Fast-mode Fast-mode Plus
[3][4][8]
tHIGH
HIGH period of the SCL clock
tHD;DAT
data hold time
Standard-mode Fast-mode Fast-mode Plus
tSU;DAT
data set-up time
[9][10]
Standard-mode Fast-mode Fast-mode Plus
[1] [2] [3] [4] [5]
See the I2C-bus specification UM10204 for details. Parameters are valid over operating temperature range unless otherwise specified. tHD;DAT is the data hold time that is measured from the falling edge of SCL; applies to data in transmission and the acknowledge. A device must internally provide a hold time of at least 300 ns for the SDA signal (with respect to the VIH(min) of the SCL signal) to bridge the undefined region of the falling edge of SCL. Cb = total capacitance of one bus line in pF.
LPC11CX2_CX4
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[6]
The maximum tf for the SDA and SCL bus lines is specified at 300 ns. The maximum fall time for the SDA output stage tf is specified at 250 ns. This allows series protection resistors to be connected in between the SDA and the SCL pins and the SDA/SCL bus lines without exceeding the maximum specified tf. In Fast-mode Plus, fall time is specified the same for both output stage and bus timing. If series resistors are used, designers should allow for this when considering bus timing. The maximum tHD;DAT could be 3.45 s and 0.9 s for Standard-mode and Fast-mode but must be less than the maximum of tVD;DAT or tVD;ACK by a transition time (see UM10204). This maximum must only be met if the device does not stretch the LOW period (tLOW) of the SCL signal. If the clock stretches the SCL, the data must be valid by the set-up time before it releases the clock. tSU;DAT is the data set-up time that is measured with respect to the rising edge of SCL; applies to data in transmission and the acknowledge.
[7] [8]
[9]
[10] A Fast-mode I2C-bus device can be used in a Standard-mode I2C-bus system but the requirement tSU;DAT = 250 ns must then be met. This will automatically be the case if the device does not stretch the LOW period of the SCL signal. If such a device does stretch the LOW period of the SCL signal, it must output the next data bit to the SDA line tr(max) + tSU;DAT = 1000 + 250 = 1250 ns (according to the Standard-mode I2C-bus specification) before the SCL line is released. Also the acknowledge timing must meet this set-up time.
tf SDA 70 % 30 % tf 70 % 30 % 70 % 30 % tHD;DAT
tSU;DAT
tVD;DAT tHIGH
SCL
70 % 30 %
70 % 30 % tLOW
70 % 30 %
S
1 / fSCL
002aaf425
Fig 20. I2C-bus pins clock timing
10.6 SPI interfaces
Table 18. Symbol Tcy(clk) tDS Dynamic characteristics of SPI pins in SPI mode Parameter clock cycle time data set-up time Conditions when only receiving when only transmitting in SPI mode 2.4 V VDD 3.6 V 2.0 V VDD < 2.4 V 1.8 V VDD < 2.0 V tDH tv(Q) th(Q) Tcy(PCLK)
LPC11CX2_CX4
Min
[1] [1] [2]
Typ -
Max -
Unit ns ns ns ns
SPI master (in SPI mode) 40 27.8 15 20 24 0 0 20
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[2] [2] [2] [2] [2]
-
10 -
ns ns ns ns ns
(c) NXP B.V. 2010. All rights reserved.
data hold time
in SPI mode
data output valid time in SPI mode data output hold time in SPI mode PCLK cycle time
SPI slave (in SPI mode)
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Table 18. Symbol tDS tDH tv(Q) th(Q)
[1]
Dynamic characteristics of SPI pins in SPI mode Parameter data set-up time data hold time Conditions in SPI mode in SPI mode
[3][4] [3][4] [3][4] [3][4]
Min 0 3 Tcy(PCLK) + 4 -
Typ -
Max 3 Tcy(PCLK) + 11 2 Tcy(PCLK) + 5
Unit ns ns ns ns
data output valid time in SPI mode data output hold time in SPI mode
Tcy(clk) = (SSPCLKDIV (1 + SCR) CPSDVSR) / fmain. The clock cycle time derived from the SPI bit rate Tcy(clk) is a function of the main clock frequency fmain, the SPI peripheral clock divider (SSPCLKDIV), the SPI SCR parameter (specified in the SSP0CR0 register), and the SPI CPSDVSR parameter (specified in the SPI clock prescale register). Tamb = 40 C to 85 C. Tcy(clk) = 12 Tcy(PCLK). Tamb = 25 C; for normal voltage supply range: VDD = 3.3 V.
[2] [3] [4]
Tcy(clk)
tclk(H)
tclk(L)
SCK (CPOL = 0)
SCK (CPOL = 1) tv(Q) MOSI DATA VALID DATA VALID tDS MISO DATA VALID tDH DATA VALID CPHA = 1 th(Q)
tv(Q) MOSI DATA VALID DATA VALID tDS MISO DATA VALID tDH DATA VALID
th(Q)
CPHA = 0
002aae829
Pin names SCK, MISO, and MOSI refer to pins for both SPI peripherals, SPI0 and SPI1.
Fig 21. SPI master timing in SPI mode
LPC11CX2_CX4
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Tcy(clk)
tclk(H)
tclk(L)
SCK (CPOL = 0)
SCK (CPOL = 1) tDS MOSI DATA VALID tv(Q) MISO DATA VALID DATA VALID tDH DATA VALID th(Q) CPHA = 1
tDS MOSI DATA VALID tv(Q) MISO DATA VALID
tDH
DATA VALID th(Q) DATA VALID CPHA = 0
002aae830
Pin names SCK, MISO, and MOSI refer to pins for both SPI peripherals, SPI0 and SPI1.
Fig 22. SPI slave timing in SPI mode
LPC11CX2_CX4
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11. Application information
11.1 ADC usage notes
The following guidelines show how to increase the performance of the ADC in a noisy environment beyond the ADC specifications listed in Table 7:
* The ADC input trace must be short and as close as possible to the LPC11Cx2/Cx4
chip.
* The ADC input traces must be shielded from fast switching digital signals and noisy
power supply lines.
* Because the ADC and the digital core share the same power supply, the power supply
line must be adequately filtered.
* To improve the ADC performance in a very noisy environment, put the device in Sleep
mode during the ADC conversion.
11.2 XTAL input
The input voltage to the on-chip oscillators is limited to 1.8 V. If the oscillator is driven by a clock in slave mode, it is recommended that the input be coupled through a capacitor with Ci = 100 pF. To limit the input voltage to the specified range, choose an additional capacitor to ground Cg which attenuates the input voltage by a factor Ci/(Ci + Cg). In slave mode, a minimum of 200 mV(RMS) is needed.
LPC1xxx
XTALIN
Ci 100 pF Cg
002aae788
Fig 23. Slave mode operation of the on-chip oscillator
In slave mode the input clock signal should be coupled by means of a capacitor of 100 pF (Figure 23), with an amplitude between 200 mV(RMS) and 1000 mV(RMS). This corresponds to a square wave signal with a signal swing of between 280 mV and 1.4 V. The XTALOUT pin in this configuration can be left unconnected. External components and models used in oscillation mode are shown in Figure 24 and in Table 19 and Table 20. Since the feedback resistance is integrated on chip, only a crystal and the capacitances CX1 and CX2 need to be connected externally in case of fundamental mode oscillation (the fundamental frequency is represented by L, CL and RS). Capacitance CP in Figure 24 represents the parallel package capacitance and should not be larger than 7 pF. Parameters FOSC, CL, RS and CP are supplied by the crystal manufacturer (see Table 19).
LPC11CX2_CX4
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LPC1xxx
L
XTALIN
XTALOUT =
XTAL CL CP
RS CX1 CX2
002aaf424
Fig 24. Oscillator modes and models: oscillation mode of operation and external crystal model used for CX1/CX2 evaluation Table 19. Recommended values for CX1/CX2 in oscillation mode (crystal and external components parameters) low frequency mode Crystal load capacitance CL 10 pF 20 pF 30 pF 5 MHz - 10 MHz 10 pF 20 pF 30 pF 10 MHz - 15 MHz 15 MHz - 20 MHz Table 20. 10 pF 20 pF 10 pF Maximum crystal series resistance RS < 300 < 300 < 300 < 300 < 200 < 100 < 160 < 60 < 80 External load capacitors CX1, CX2 18 pF, 18 pF 39 pF, 39 pF 57 pF, 57 pF 18 pF, 18 pF 39 pF, 39 pF 57 pF, 57 pF 18 pF, 18 pF 39 pF, 39 pF 18 pF, 18 pF
Fundamental oscillation frequency FOSC 1 MHz - 5 MHz
Recommended values for CX1/CX2 in oscillation mode (crystal and external components parameters) high frequency mode Crystal load capacitance CL 10 pF 20 pF 10 pF 20 pF Maximum crystal series resistance RS < 180 < 100 < 160 < 80 External load capacitors CX1, CX2 18 pF, 18 pF 39 pF, 39 pF 18 pF, 18 pF 39 pF, 39 pF
Fundamental oscillation frequency FOSC 15 MHz - 20 MHz 20 MHz - 25 MHz
11.3 XTAL Printed Circuit Board (PCB) layout guidelines
The crystal should be connected on the PCB as close as possible to the oscillator input and output pins of the chip. Take care that the load capacitors Cx1, Cx2, and Cx3 in case of third overtone crystal usage have a common ground plane. The external components must also be connected to the ground plain. Loops must be made as small as possible in
LPC11CX2_CX4
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order to keep the noise coupled in via the PCB as small as possible. Also parasitics should stay as small as possible. Values of Cx1 and Cx2 should be chosen smaller accordingly to the increase in parasitics of the PCB layout.
11.4 Standard I/O pad configuration
Figure 25 shows the possible pin modes for standard I/O pins with analog input function:
* * * * *
Digital output driver Digital input: Pull-up enabled/disabled Digital input: Pull-down enabled/disabled Digital input: Repeater mode enabled/disabled Analog input
VDD
output enable pin configured as digital output driver output
ESD PIN ESD
VDD weak pull-up pull-up enable repeater mode enable pull-down enable weak pull-down
VSS
pin configured as digital input
data input
select analog input pin configured as analog input analog input
002aaf304
Fig 25. Standard I/O pad configuration
LPC11CX2_CX4
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11.5 Reset pad configuration
VDD VDD VDD
Rpu
ESD
reset
20 ns RC GLITCH FILTER
PIN
ESD
VSS
002aaf274
Fig 26. Reset pad configuration
11.6 C_CAN with external transceiver (LPC11C12/C14 only)
BAT
3V
5V VCC CANH CANH S VIO
LPC11C12/C14
PIOx_y CAN_TXD CAN_RXD
TJF1051
CANL GND
TXD RXD
CANL
002aaf911
Fig 27. Connecting the C_CAN to an external transceiver (LPC11C12/C14)
LPC11CX2_CX4
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11.7 C_CAN with on-chip, high-speed transceiver (LPC11C22/C24 only)
VDD
3V
5V VCC VDD_CAN
LPC11C22/C24
CANH CANH CAN HIGH-SPEED TRANSCEIVER CANL CANL STD CAN_RXD CAN_TXD
VDD
C_CAN
GND
002aaf910
Fig 28. Connecting the CAN high-speed transceiver to the CAN bus (LPC11C22/C24)
LPC11CX2_CX4
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12. Package outline
LQFP48: plastic low profile quad flat package; 48 leads; body 7 x 7 x 1.4 mm SOT313-2
c
y X
36 37
25 24 ZE
A
e
E HE
A A2
A1
(A 3) Lp L detail X
wM pin 1 index 48 1 12 ZD bp D HD wM B vM B vM A 13 bp
e
0
2.5 scale
5 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A max. 1.6 A1 0.20 0.05 A2 1.45 1.35 A3 0.25 bp 0.27 0.17 c 0.18 0.12 D (1) 7.1 6.9 E (1) 7.1 6.9 e 0.5 HD 9.15 8.85 HE 9.15 8.85 L 1 Lp 0.75 0.45 v 0.2 w 0.12 y 0.1 Z D (1) Z E (1) 0.95 0.55 0.95 0.55 7o o 0
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT313-2 REFERENCES IEC 136E05 JEDEC MS-026 JEITA EUROPEAN PROJECTION
ISSUE DATE 00-01-19 03-02-25
Fig 29. Package outline SOT313-2 (LQFP48)
LPC11CX2_CX4 All information provided in this document is subject to legal disclaimers. (c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
55 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
13. Abbreviations
Table 21. Acronym ADC AHB APB API BOD CAN GPIO PLL RC SDO SPI SSI SSP UART Abbreviations Description Analog-to-Digital Converter Advanced High-performance Bus Advanced Peripheral Bus Application Programming Interface BrownOut Detection Controller Area Network General Purpose Input/Output Phase-Locked Loop Resistor-Capacitor Service Data Object Serial Peripheral Interface Serial Synchronous Interface Synchronous Serial Port Universal Asynchronous Receiver/Transmitter
LPC11CX2_CX4
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
56 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
14. Revision history
Table 22. Revision history Release date 20101203 Data sheet status Product data sheet Change notice Supersedes LPC11C12_C14 v.1 Document ID LPC11CX2_CX4 v.2 Modifications:
* * * * * * * * * *
Parts LPC11C22 and LPC11C24 added. Pin description for parts LPC11C22 and LPC11C24 added (Table 4). Static characteristics for CAN transceiver added (Table 8). Description of high-speed, on-chip CAN transceiver added (LPC11C22/C24). See Section 7.11.2. Application diagram for connecting the C_CAN to an external transceiver added (Section 11.6). Application diagram for high-speed, on-chip CAN transceiver added (Section 11.7). Typical value for parameter Nendu added in Table 12 "Flash characteristics". Description of RESET and WAKEKUP pins updated in Table 3. PLL output frequency limited to < 100 MHz in Section 7.16.2 "System PLL". Parameter Vhys for I2C bus pins: typical value corrected Vhys = 0.05VDD in Table 6. Product data sheet -
LPC11C12_C14 v.1
20100921
LPC11CX2_CX4
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
57 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
15. Legal information
15.1 Data sheet status
Document status[1][2] Objective [short] data sheet Preliminary [short] data sheet Product [short] data sheet
[1] [2] [3]
Product status[3] Development Qualification Production
Definition This document contains data from the objective specification for product development. This document contains data from the preliminary specification. This document contains the product specification.
Please consult the most recently issued document before initiating or completing a design. The term `short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nxp.com.
15.2 Definitions
Draft -- The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet -- A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local NXP Semiconductors sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. Product specification -- The information and data provided in a Product data sheet shall define the specification of the product as agreed between NXP Semiconductors and its customer, unless NXP Semiconductors and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the NXP Semiconductors product is deemed to offer functions and qualities beyond those described in the Product data sheet.
malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors accepts no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Applications -- Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products, and NXP Semiconductors accepts no liability for any assistance with applications or customer product design. It is customer's sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer's applications and products planned, as well as for the planned application and use of customer's third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. NXP Semiconductors does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer's applications or products, or the application or use by customer's third party customer(s). Customer is responsible for doing all necessary testing for the customer's applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer's third party customer(s). NXP does not accept any liability in this respect. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale -- NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nxp.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NXP Semiconductors hereby expressly objects to applying the customer's general terms and conditions with regard to the purchase of NXP Semiconductors products by customer. No offer to sell or license -- Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control -- This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from national authorities.
(c) NXP B.V. 2010. All rights reserved.
15.3 Disclaimers
Limited warranty and liability -- Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, NXP Semiconductors' aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors. Right to make changes -- NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use -- NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or
LPC11CX2_CX4
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Product data sheet
Rev. 2 -- 3 December 2010
58 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors' standard warranty and NXP Semiconductors' product specifications.
Non-automotive qualified products -- Unless this data sheet expressly states that this specific NXP Semiconductors product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. NXP Semiconductors accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without NXP Semiconductors' warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond NXP Semiconductors' specifications such use shall be solely at customer's
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. I2C-bus -- logo is a trademark of NXP B.V.
16. Contact information
For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com
LPC11CX2_CX4
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
59 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
17. Contents
1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Ordering information . . . . . . . . . . . . . . . . . . . . . 3 4.1 Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 3 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 5 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7 7 Functional description . . . . . . . . . . . . . . . . . . 15 7.1 ARM Cortex-M0 processor . . . . . . . . . . . . . . . 15 7.2 On-chip flash program memory . . . . . . . . . . . 15 7.3 On-chip SRAM . . . . . . . . . . . . . . . . . . . . . . . . 15 7.4 Memory map. . . . . . . . . . . . . . . . . . . . . . . . . . 15 7.5 Nested Vectored Interrupt Controller (NVIC) . 16 7.5.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7.5.2 Interrupt sources. . . . . . . . . . . . . . . . . . . . . . . 17 7.6 IOCONFIG block . . . . . . . . . . . . . . . . . . . . . . 17 7.7 Fast general purpose parallel I/O . . . . . . . . . . 17 7.7.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.8 UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 7.8.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.9 SPI serial I/O controller. . . . . . . . . . . . . . . . . . 18 7.9.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.10 I2C-bus serial I/O controller . . . . . . . . . . . . . . 18 7.10.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.11 C_CAN controller . . . . . . . . . . . . . . . . . . . . . . 19 7.11.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.11.2 On-chip, high-speed CAN transceiver . . . . . . 20 7.11.2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.11.2.2 Normal mode . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.11.2.3 Silent mode. . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7.11.2.4 Undervoltage protection . . . . . . . . . . . . . . . . . 20 7.11.2.5 Thermal protection . . . . . . . . . . . . . . . . . . . . . 20 7.11.2.6 Time-out function . . . . . . . . . . . . . . . . . . . . . . 20 7.12 10-bit ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.12.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.13 General purpose external event counter/timers . . 21 7.13.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 7.14 System tick timer . . . . . . . . . . . . . . . . . . . . . . 22 7.15 Watchdog timer. . . . . . . . . . . . . . . . . . . . . . . . 22 7.15.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.16 Clocking and power control . . . . . . . . . . . . . . 22 7.16.1 Crystal oscillators . . . . . . . . . . . . . . . . . . . . . . 22 7.16.1.1 Internal RC oscillator . . . . . . . . . . . . . . . . . . . 23 7.16.1.2 System oscillator . . . . . . . . . . . . . . . . . . . . . . 23 7.16.1.3 Watchdog oscillator . . . . . . . . . . . . . . . . . . . . 24 7.16.2 System PLL . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.16.3 Clock output . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.16.4 Wake-up process . . . . . . . . . . . . . . . . . . . . . . 24 7.16.5 Power control . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.16.5.1 Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . 24 7.16.5.2 Deep-sleep mode. . . . . . . . . . . . . . . . . . . . . . 25 7.16.5.3 Deep power-down mode . . . . . . . . . . . . . . . . 25 7.17 System control . . . . . . . . . . . . . . . . . . . . . . . . 25 7.17.1 Start logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7.17.2 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 7.17.3 Brownout detection . . . . . . . . . . . . . . . . . . . . 25 7.17.4 Code security (Code Read Protection - CRP) 26 7.17.5 Bootloader . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 7.17.6 APB interface . . . . . . . . . . . . . . . . . . . . . . . . . 27 7.17.7 AHBLite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 7.17.8 External interrupt inputs . . . . . . . . . . . . . . . . . 27 7.18 Emulation and debugging . . . . . . . . . . . . . . . 27 8 Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 28 9 Static characteristics . . . . . . . . . . . . . . . . . . . 29 9.1 ADC characteristics . . . . . . . . . . . . . . . . . . . . 32 9.2 CAN on-chip, high-speed transceiver characteristics . . . . . . . . . . . . . . . . . . . . . . . . 34 9.3 BOD static characteristics . . . . . . . . . . . . . . . 36 9.4 Power consumption . . . . . . . . . . . . . . . . . . . 36 9.5 Peripheral power consumption . . . . . . . . . . . 40 9.6 Electrical pin characteristics. . . . . . . . . . . . . . 41 10 Dynamic characteristics. . . . . . . . . . . . . . . . . 44 10.1 Flash memory . . . . . . . . . . . . . . . . . . . . . . . . 44 10.2 External clock. . . . . . . . . . . . . . . . . . . . . . . . . 44 10.3 Internal oscillators . . . . . . . . . . . . . . . . . . . . . 45 10.4 I/O pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 10.5 I2C-bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 10.6 SPI interfaces. . . . . . . . . . . . . . . . . . . . . . . . . 47 11 Application information . . . . . . . . . . . . . . . . . 50 11.1 ADC usage notes. . . . . . . . . . . . . . . . . . . . . . 50 11.2 XTAL input . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 11.3 XTAL Printed Circuit Board (PCB) layout guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 11.4 Standard I/O pad configuration . . . . . . . . . . . 52 11.5 Reset pad configuration . . . . . . . . . . . . . . . . . 53 11.6 C_CAN with external transceiver (LPC11C12/C14 only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 11.7 C_CAN with on-chip, high-speed transceiver (LPC11C22/C24 only) . . . . . . . . . . . . . . . . . . 54 12 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 55 13 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 56
continued >>
LPC11CX2_CX4
All information provided in this document is subject to legal disclaimers.
(c) NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 -- 3 December 2010
60 of 61
NXP Semiconductors
LPC11Cx2/Cx4
32-bit ARM Cortex-M0 microcontroller
57 58 58 58 58 59 59 60
14 15 15.1 15.2 15.3 15.4 16 17
Revision history . . . . . . . . . . . . . . . . . . . . . . . . Legal information. . . . . . . . . . . . . . . . . . . . . . . Data sheet status . . . . . . . . . . . . . . . . . . . . . . Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . Contact information. . . . . . . . . . . . . . . . . . . . . Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Please be aware that important notices concerning this document and the product(s) described herein, have been included in section `Legal information'.
(c) NXP B.V. 2010.
All rights reserved.
For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 3 December 2010 Document identifier: LPC11CX2_CX4

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