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PCA9539 16-bit I2C and SMBus, low power I/O port with interrupt and reset
Product data sheet Supersedes data of 2004 Aug 27 2004 Sep 30
Philips Semiconductors
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt and reset
PCA9539
DESCRIPTION
The PCA9539 is a 24-pin CMOS device that provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for I2C/SMBus applications and was developed to enhance the Philips family of I2C I/O expanders. I/O expanders provides a simple solution when additional I/O is needed for ACPI power switches, sensors, pushbuttons, LEDs, fans, etc. The PCA9539 consists of two 8-bit Configuration (Input or Output selection); Input, Output and Polarity inversion (Active HIGH or Active LOW operation) registers. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each Input or Output is kept in the corresponding Input or Output register. The polarity of the read register can be inverted with the Polarity Inversion Register. All registers can be read by the system master. The PCA9539 is identical to the PCA9555 except for the removal of the internal I/O pull-up resistor which greatly reduces power consumption when the I/Os are held LOW, repleacement of A2 with RESET and different address range. The PCA9539 open-drain interrupt output is activated when any input state differs from its corresponding input port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine. The RESET pin causes the same reset/sonfiguration to occur without depowering the device. Two hardware pins (A0, A1) vary the fixed I2C address and allow up to four devices to share the same I2C/SMBus.
FEATURES
* 16-bit I2C GPIO with interrupt and reset * Operating power supply voltage range of 2.3 V-5.5 V * 5 V tolerant I/Os * Polarity inversion register * Active LOW interrupt output * Active LOW reset input * Low stand-by current * Noise filter on SCL/SDA inputs * No glitch on power-up * Internal power-on reset * 16 I/O pins which default to 16 inputs * 0 kHz to 400 kHz clock frequency * ESD protection exceeds 2000 V HBM per JESD22-A114, * Latch-up testing is done to JESDEC Standard JESD78 which * Offered in three different packages: SO24, TSSOP24, and
HVQFN24 exceeds 100 mA 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
ORDERING INFORMATION
PACKAGES 24-Pin Plastic SO 24-Pin Plastic TSSOP 24-Pin Plastic HVQFN TEMPERATURE RANGE -40 C to +85 C -40 C to +85 C -40 C to +85 C ORDER CODE PCA9539D PCA9539PW PCA9539BS TOPSIDE MARK PCA9539D PCA9539PW 9539 DRAWING NUMBER SOT137-1 SOT355-1 SOT616-1
Standard packing quantities and other packing data are available at www.standardproducts.philips.com/packaging. I2C is a trademark of Philips Semiconductors Corporation. SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I2C patent.
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2
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt and reset
PCA9539
PIN CONFIGURATION -- SO, TSSOP
INT 1 A1 RESET I/O0.0 I/O0.1 I/O0.2 I/O0.3 I/O0.4 I/O0.5 2 3 4 5 6 7 8 9 24 VDD 23 SDA 22 SCL 21 A0 20 I/O1.7 19 I/O1.6
PIN CONFIGURATION --HVQFN
24 RESET 21 VDD 20 SDA 19 SCL 18 A0 17 I/O1.7 16 I/O1.6 15 I/O1.5 14 I/O1.4 13 I/O1.3 I/O1.2 12 I/O1.0 10 I/O1.1 11 7 8 I/O0.7 9 VSS 22 INT 23 A1
I/O0.0 I/O0.1 I/O0.2 I/O0.3
1 2 3 4 5 6
18 I/O1.5 I/O0.4 17 I/O1.4 16 I/O1.3 15 I/O1.2 14 I/O1.1 13 I/O1.0 I/O0.5
I/O0.6 10 I/O0.7 11 VSS 12
I/O0.6
SW02200
TOP VIEW Figure 2. Pin configuration -- HVQFN
SW02201
Figure 1. Pin configuration -- SO, TSSOP
PIN DESCRIPTION
SO, TSSOP PIN NUMBER 1 2 3 4-11 12 13-20 21 22 23 24 HVQFN PIN NUMBER 22 23 24 1-8 9 10-17 18 19 20 21 SYMBOL INT A1 RESET I/O0.0-I/O0.7 VSS I/O1.0-I/O1.7 A0 SCL SDA VDD FUNCTION Interrupt output (open drain) Address input 1 Active LOW reset input I/O0.0 to I/O0.7 Supply ground I/O1.0 to I/O1.7 Address input 0 Serial clock line Serial data line Supply voltage
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt and reset
PCA9539
BLOCK DIAGRAM
PCA9539
I/O1.0 I/O1.1 A0 A1 8-BIT INPUT/ OUTPUT PORTS I/O1.2 I/O1.3 I/O1.4 I/O1.5 I/O1.6 I/O1.7
WRITE pulse READ pulse
I2C/SMBUS CONTROL I/O0.0 I/O0.1 SCL SDA I/O0.2 INPUT FILTER 8-BIT INPUT/ OUTPUT PORTS I/O0.3 I/O0.4 I/O0.5 I/O0.6 I/O0.7 VCC RESET POWER-ON RESET INT LP FILTER NOTE: ALL I/Os ARE SET TO INPUTS AT RESET
WRITE pulse READ pulse VDD
VSS
SW02202
Figure 3. Block diagram
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt and reset
PCA9539
SIMPLIFIED SCHEMATIC OF I/Os
DATA FROM SHIFT REGISTER CONFIGURATION REGISTER DATA FROM SHIFT REGISTER D FF WRITE CONFIGURATION PULSE WRITE PULSE CK Q D FF I/O PIN CK Q Q2 ESD PROTECTION DIODE Q Q Q1 ESD PROTECTION DIODE OUTPUT PORT REGISTER DATA VDD
OUTPUT PORT REGISTER INPUT PORT REGISTER D FF READ PULSE CK Q Q
VSS
INPUT PORT REGISTER DATA
TO INT
DATA FROM SHIFT REGISTER WRITE POLARITY PULSE
D FF CK
Q
POLARITY REGISTER DATA
Q
POLARITY INVERSION REGISTER
SU02203
NOTE: At Power-on Reset, all registers return to default values. Figure 4. Simplified schematic of I/Os
I/O port
When an I/O is configured as an input, FETs Q1 and Q2 are off, creating a high impedance input. The input voltage may be raised above VDD to a maximum of 5.5 V. If the I/O is configured as an output, then either Q1 or Q2 is on, depending on the state of the Output Port register. Care should be exercised if an external voltage is applied to an I/O configured as an output because of the low impedance path that exists between the pin and either VDD or VSS.
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt and reset
PCA9539
REGISTERS Command Byte
Command 0 1 2 3 4 5 6 7 Register Input port 0 Input port 1 Output port 0 Output port 1 Polarity inversion port 0 Polarity inversion port 1 Configuration port 0 Configuration port 1
bit
default
C1.7
1
C1.6
1
C1.5
1
C1.4
1
C1.3
1
C1.2
1
C1.1
1
C1.0
1
This register configures the directions of the I/O pins. If a bit in this register is set (written with `1'), the corresponding port pin is enabled as an input with high impedance output driver. If a bit in this register is cleared (written with `0'), the corresponding port pin is enabled as an output. At reset the device's ports are inputs.
POWER-ON RESET
When power is applied to VDD, an internal power-on reset holds the PCA9539 in a reset condition until VDD has reached VPOR. At that point, the reset condition is released and the PCA9539 registers and SMBus state machine will initialize to their default states. Therefore, VDD must be lowered below 0.2 V to reset the device. For a power reset cycle, VDD must be lowered below 0.2 V and then restored to the operating voltage.
The command byte is the first byte to follow the address byte during a write transmission. It is used as a pointer to determine which of the following registers will be written or read.
Registers 0 and 1 -- Input Port Registers
bit
default
RESET Input
I0.1
X
I0.7
X
I0.6
X
I0.5
X
I0.4
X
I0.3
X
I0.2
X
IO.0
X
bit
default
I1.7
X
I1.6
X
I1.5
X
I1.4
X
I1.3
X
I1.2
X
I1.1
X
I1.0
X
A reset can be accomplished by holding the RESET pin LOW for a minimum of tW. The PCA9539 registers and SMBus/I2C state machine will be held in their default state until the RESET input is once again HIGH. This input typically requires a pull-up to VDD.
DEVICE ADDRESS
slave address
This register is an input-only port. It reflects the incoming logic levels of the pins, regardless of whether the pin is defined as an input or an output by Register 3. Writes to this register have no effect. The default value `X' is determined by the externally applied logic level.
1 1
1
0
1
A1
A0 R/W
fixed
programmable
Registers 2 and 3 -- Output Port Registers
bit
default O0.7 1 O1.7 1 O0.6 1 O1.6 1 O0.5 1 O1.5 1 O0.4 1 O1.4 1 O0.3 1 O1.3 1 O0.2 1 O1.2 1 O0.1 1 O1.1 1 O0.0 1 O1.0 1
SW02204
Figure 5. PCA9539 address
bit
default
This register is an output-only port. It reflects the outgoing logic levels of the pins defined as outputs by Register 6 and 7. Bit values in this register have no effect on pins defined as inputs. In turn, reads from this register reflect the value that is in the flip-flop controlling the output selection, NOT the actual pin value.
Registers 4 and 5 -- Polarity Inversion Registers
bit
default
N0.7
0
N0.6
0
N0.5
0
N0.4
0
N0.3
0
N0.2
0
N0.1
0
N0.0
0
bit
default
N1.7
0
N1.6
0
N1.5
0
N1.4
0
N1.3
0
N1.2
0
N1.1
0
N1.0
0
This register allows the user to invert the polarity of the Input Port register data. If a bit in this register is set (written with `1'), the Input Port data polarity is inverted. If a bit in this register is cleared (written with a `0'), the Input Port data polarity is retained.
Registers 6 and 7 -- Configuration Registers
bit
default
C0.7
1
C0.6
1
C0.5
1
C0.4
1
C0.3
1
C0.2
1
C0.1
1
C0.0
1
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt and reset
PCA9539
BUS TRANSACTIONS Writing to the port registers
Data is transmitted to the PCA9539 by sending the device address and setting the least significant bit to a logic 0 (see Figure 5 for device address). The command byte is sent after the address and determines which register will receive the data following the command byte. The eight registers within the PCA9539 are configured to operate as four register pairs. The four pairs are Input Ports, Output Ports, Polarity Inversion Ports, and Configuration Ports. After sending data to one register, the next data byte will be sent to the other register in the pair (see Figures 6 and 7). For example, if the first byte is sent to Output Port (register 3), then the next byte will be stored in Output Port 0 (register 2). There is no limitation on the number of data bytes sent in one write transmission. In this way, each 8-bit register may be updated independently of the other registers.
After a restart, the device address is sent again but this time, the least significant bit is set to a logic 1. Data from the register defined by the command byte will then be sent by the PCA9539 (see Figures 8 , 9, and 10). Data is clocked into the register on the falling edge of the acknowledge clock pulse. After the first byte is read, additional bytes may be read but the data will now reflect the information in the other register in the pair. For example, if you read Input Port 1, then the next byte read would be Input Port 0. There is no limitation on the number of data bytes received in one read transmission but the final byte received, the bus master must not acknowledge the data.
Interrupt Output
The open-drain interrupt output is activated when one of the port pins change state and the pin is configured as an input. The interrupt is deactivated when the input returns to its previous state or the input port register is read (see Figure 9). A pin configured as an output cannot cause an interrupt. Since each 8-bit port is read independently, the interrupt caused by Port 0 will not be cleared by a read of Port 1 or the other way around. Note that changing an I/O from an output to an input may cause a false interrupt to occur if the state of the pin does not match the contents of the Input Port register.
Reading the port registers
In order to read data from the PCA9539, the bus master must first send the PCA9539 address with the least significant bit set to a logic 0 (see Figure 5 for device address). The command byte is sent after the address and determines which register will be accessed.
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SCL command byte data to port 0 1 acknowledge from slave acknowledge from slave 0 A 0.7 DATA 0 0.0 A 1.7 DATA 1 1.0 A P data to port 1
1 4 5 6 7 8
2
3
9
Philips Semiconductors
2004 Sep 30
0 R/W acknowledge from slave 1 A1 A0 0 A 0 0 0 0 0 0 tpv DATA VALID tpv
slave address
SDA
S
1
1
1
start condition
WRITE TO PORT
DATA OUT FROM PORT 0
DATA OUT FROM PORT 1
SW02205
Figure 6. WRITE to output port registers
16-bit I2C and SMBus, low power I/O port with interrupt and reset
SCL command byte data to register 1 acknowledge from slave 0 A MSB DATA 0 LSB
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5 data to register
8
0 R/W acknowledge from slave 1 A1 A0 0 A 0 0 0 0 0 1
slave address
SDA
S
1
1
1
A MSB acknowledge from slave
DATA 1
LSB
A
P
start condition
SU02206
Figure 7. WRITE to configuration registers
PCA9539
Product data sheet
Philips Semiconductors
2004 Sep 30
S 1 1 SCL 1 2 3 4
16-bit I2C and SMBus, low power I/O port with interrupt and reset
slave address
acknowledge from slave
acknowledge from slave
slave address
acknowledge from slave
data from lower or upper byte of register
acknowledge from master
1
0
1
A1 A0
0 R/W
A
COMMAND BYTE
A
S
1
1
1
0
1
A1 A0
1 R/W
A MSB
DATA first byte
LSB
A
at this moment master-transmitter becomes master-receiver and slave-receiver becomes slave-transmitter
data from upper or lower byte of register
no acknowledge from master
MSB
DATA last byte
LSB NA
P
SW02207
NOTE: Transfer can be stopped at any time by a STOP condition. Figure 8. READ from register
5
6
7
8
9 I0.x I1.x 2 1 0 A 7 6 5 4 3 2 1 0 A 7 6 5 4 I0.x 3 2 1 0 A 7 6 5 4 I1.x 3 2 1 0 1 P
9
SDA S 1 1 1 0 1 A1 A0 1 R/W A 7 6 5 4 ACKNOWLEDGE FROM SLAVE READ FROM PORT 0 DATA INTO PORT 0 READ FROM PORT 1 DATA INTO PORT 1 INT tIV tIR
3
ACKNOWLEDGE FROM MASTER
ACKNOWLEDGE FROM MASTER
ACKNOWLEDGE FROM MASTER NON ACKNOWLEDGE FROM MASTER
PCA9539
Product data sheet
SW02208
NOTES: Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the latest acknowledge phase is valid (output mode). It is assumed that the command byte has previously been set to 00 (read input port port register). Figure 9. READ input port register -- scenario 1
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Philips Semiconductors
16-bit I2C and SMBus, low power I/O port with interrupt and reset
SCL
1
2
3
4
5
6
7
8
9 I0.x I1.x A DATA 10 A I0.x DATA 03 A I1.x DATA 12 1 P
SDA
S
1
1
1
0
1
A1 A0
1 R/W
A
DATA 00
ACKNOWLEDGE FROM SLAVE tph
ACKNOWLEDGE FROM MASTER
ACKNOWLEDGE FROM MASTER tps
ACKNOWLEDGE FROM MASTER NON ACKNOWLEDGE FROM MASTER
READ FROM PORT 0
DATA INTO PORT 0
DATA 00
DATA 01 tph
DATA 02
DATA 03 tps
READ FROM PORT 1
DATA INTO PORT 1
DATA 10
DATA 11
DATA 12
INT tIV tIR
SW02209
NOTES: Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the latest acknowledge phase is valid (output mode). It is assumed that the command byte has previously been set to 00 (read input port port register). Figure 10. READ input port register -- scenario 2
PCA9539
Product data sheet
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
TYPICAL APPLICATION
VDD (5 V) VDD SCL SDA INT RESET GND 2 k 10 k 10 k 10 k 10 k VDD MASTER CONTROLLER SCL SDA INT RESET I/O0.0 I/O0.1 I/O0.2 I/O0.3 I/O0.4 I/O0.5 ALARM SUBSYSTEM 3 (e.g. alarm system) B ENABLE 100 k (x3) SUBSYSTEM 1 (e.g. temp sensor) INT
SUBSYSTEM 2 (e.g. counter) RESET A
PCA9539
VDD I/O0.6 I/O0.7 I/O1.0 I/O1.1 A1 A0 I/O1.2 I/O1.3 I/O1.4 I/O1.5 I/O1.6 VSS I/O1.7 10 DIGIT NUMERIC KEYPAD Controlled Switch (e.g. CBT device)
NOTE: Device address configured as 1110100 for this example I/O0.0, I/O0.2, I/O0.3, configured as outputs I/O0.1, I/O0.4, I/O0.5, configured as inputs I/O0.6, I/O0.7, and I/O1.0 to I/O1.7 configured as inputs
SW02094
Figure 11. Typical application
Minimizing IDD when the I/O is used to control LEDs
When the I/Os are used to control LEDs, they are normally connected to VDD through a resistor as shown in Figure 11. Since the LED acts as a diode, when the LED is off the I/O VIN is about 1.2 V less than VDD. The supply current, IDD, increases as VIN becomes lower than VDD and is specified as IDD in the DC characteristics table. Designs needing to minimize current consumption, such as battery power applications, should consider maintaining the I/O pins greater than or equal to VDD when the LED is off. Figure 12 shows a high value resistor in parallel with the LED. Figure 13 shows VDD less than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O VIN at or above VDD and prevents additional supply current consumption when the LED is off.
VDD
3.3 V
5V
LED VDD
100 k VDD LED
LEDx
LEDx
SW02086
SW02087
Figure 12. High value resistor in parallel with the LED
Figure 13. Device supplied by a lower voltage
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
ABSOLUTE MAXIMUM RATINGS
In accordance with the Absolute Maximum Rating System (IEC 134) SYMBOL VDD VI/O II/O II IDD ISS Ptot Tstg Tamb TJ(MAX) Supply voltage DC input current on an I/O DC output current on an I/O DC input current Supply current Supply current Total power dissipation Storage temperature range Operating ambient temperature Maximum junction temperature PARAMETER CONDITIONS MIN -0.5 VSS - 0.5 -- -- -- -- -- -65 -40 -- MAX 6.0 6 50 20 160 200 200 +150 +85 +125 UNIT V V mA mA mA mA mW C C C
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
HANDLING
Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC24 under "Handling MOS devices".
DC CHARACTERISTICS
SYMBOL Supplies VDD IDD Istbl Istbh VPOR VIL VIH IOL IL CI I/Os VIL VIH IO OL Supply voltage Supply current Standby current Standby current
VDD = 2.3 V to 5.5 V; VSS = 0 V; Tamb = -40 C to +85 C; unless otherwise specified. PARAMETER CONDITIONS MIN TYP MAX UNIT
2.3 Operating mode; VDD = 5.5 V; no load; fSCL = 100 kHz; I/O = inputs Standby mode; VDD = 5.5 V; no load; VI = VSS; fSCL = 0 kHz; I/O = inputs Standby mode; VDD = 5.5 V; no load; VI = VDD; fSCL = 0 kHz; I/O = inputs No load; VI = VDD or VSS -- -- -- --
-- 135 0.25 0.25 1.5
5.5 200 1 1 1.65
V A A A V
Power-on reset voltage (Note 1)
input SCL; input/output SDA LOW-level input voltage HIGH-level input voltage LOW-level output current Leakage current Input capacitance VOL = 0.4 V VI = VDD = VSS VI = VSS -0.5 0.7VDD 3 -1 -- -- -- tbd -- 6 0.3VDD 5.5 -- +1 10 V V mA A pF
LOW-level input voltage HIGH-level input voltage LOW-level LOW level output current VOL = 0.5 V; VDD = 2.3 V to 5.5 V; Note 2 VOL = 0.7 V; VDD = 2.3 V to 5.5 V; Note 2 IOH = -8 mA; VDD = 2.3 V; Note 3 IOH = -10 mA; VDD = 2.3 V; Note 3
-0.5 0.7VDD 8 10 1.8 1.7 2.6 2.5 4.1 4.0 -- -- -- --
-- -- 8-20 10-24 -- -- -- -- -- -- -- -- 3.7 3.7
0.3VDD 5.5 -- -- -- -- -- -- -- -- 1 -1 5 5
V V mA mA V V V V V V A A pF pF
VO OH
HIGH-level HIGH level output voltage
IOH = -8 mA; VDD = 3.0 V; Note 3 IOH = -10 mA; VDD = 3.0 V; Note 3 IOH = -8 mA; VDD = 4.75 V; Note 3 IOH = -10 mA; VDD = 4.75 V; Note 3
IIH IIL CI CO IOL VIL VIH ILI
Input leakage current Input leakage current Input capacitance Output capacitance
VDD = 5.5 V; VI = VDD VDD = 5.5 V; VI = VSS
Interrupt INT LOW-level output current VOL = 0.4 V 3 tbd -- mA
Select Inputs A0, A1, and RESET LOW-level input voltage HIGH-level input voltage Input leakage current -0.5 0.7VDD -1 -- -- -- 0.3VDD 5.5 1 V V A
NOTES: 1. VDD must be lowered to 0.2 V in order to reset part. 2. Each I/O must be externally limited to a maximum of 25 mA and each octal (I/O0.0 to I/O0.7, and I/O1.0 to I/O1.7) must be limited to a maximum current of 100 mA for a device total of 200 mA. 3. The total current sourced by all I/Os must be limited to 160 mA (80 mA for I/O 0.0 through 0.7 and 80 mA for I/O 1.0 through 1.7).
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
AC CHARACTERISTICS
SYMBOL fSCL tBUF tHD;STA tSU;STA tSU;STO tVD;ACK tHD;DAT tVD;DAT tSU;DAT tLOW tHIGH tF tR tSP Port Timing tPV tPS tPH tIV tIR RESET tW tREC tRESET5,6 Reset pulse width Reset recovery time Time to reset 4 0 400 -- -- -- 4 0 400 -- -- -- ns ns ns Output data valid Input data set-up time Input data hold time Interrupt valid Interrupt reset -- 150 1 -- -- 200 -- -- 4 4 -- 150 1 -- -- 200 -- -- 4 4 ns ns s s s Operating frequency Bus free time between STOP and START conditions Hold time after (repeated) START condition Repeated START condition setup time Set-up time for STOP condition Valid time of ACK condition2 Data in hold time Data out valid time3 Data set-up time Clock LOW period Clock HIGH period Clock/Data fall time Clock/Data rise time Pulse width of spikes that must be suppressed by the input filters PARAMETER STANDARD MODE I2C-bus MIN 0 4.7 4.0 4.7 4.0 0.3 0 300 250 4.7 4.0 -- -- -- MAX 100 -- -- -- -- 3.45 -- -- -- -- -- 300 1000 50 FAST MODE I2C-bus MIN 0 1.3 0.6 0.6 0.6 0.1 0 50 100 1.3 0.6 20 + 0.1Cb 1 20 + 0.1Cb 1 -- MAX 400 -- -- -- -- 0.9 -- -- -- -- -- 300 300 50 kHz s s s s s ns ns ns s s ns ns ns UNITS
Interrupt Timing
NOTES: 1. Cb = total capacitance of one bus line in pF. 2. tVD;ACK = time for Acknowledgement signal from SCL LOW to SDA (out) LOW. 3. tVD;DAT = minimum time for SDA data out to be valid following SCL LOW. 4. tPV measured from 0.7VDD on SCL to 50% I/O output. 5. Resetting the device while actively communicating on the bus may cause glitches or errant STOP conditions. 6. Upon reset, the full delay will be the sum of tRESET and the RC time constant of the SDA bus.
SDA
tF
tLOW
tR
tSU;DAT
tF
tHD;STA
tSP
tR
tBUF
SCL
S
tHD;STA
tHD;DAT tHIGH
tSU;STA
SR
tSU;STD
P
S
SU01469
Figure 14. Definition of timing
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
START SCL
ACK OR READ CYCLE
SDA
30% tRESET RESET 50% tREC tW tRESET I/Ox 50% 50% 50%
I/O configured as inputs
SW02340
Figure 15. Definition of RESET timing
70 % SCL 2 1 0 A P 30 %
SDA tPS tPH
INPUT tIV tIR
50 %
INT
SW02329
Figure 16. Expanded view of Read input port register
70 % SCL 2 1 0 A P 30 %
SDA tPV
OUTPUT
50 %
SW02330
Figure 17. Expanded view of Write to output port register
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Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
PROTOCOL
START CONDITION (S)
BIT 7 MSB (A7)
BIT 6 (A6)
BIT 0 (R/W)
ACKNOWLEDGE (A)
STOP CONDITION (S)
t
SU;STA
t
LOW
t HIGH
1 / f SCL
SCL
t
BUF
tr
t f
SDA
t HD;STA
t
SU;DAT
t
HD;DAT
t
tSU;STO VD;DAT t VD;ACK
SW02210
Figure 18. I2C-bus timing diagram; rise and fall times refer to VIL and VIH
TEST CIRCUITS
VDD RL = 500 VI PULSE GENERATOR RT D.U.T. CL 50 pF VO VDD Open
DEFINITIONS
RL = Load resistor. CL = Load capacitance includes jig and probe capacitance RT = Termination resistance should be equal to the output impedance ZO of the pulse generators.
SW02181
Figure 19. Test circuitry for switching times
From Output Under Test CL = 50 pF
500
2VDD S1 Open GND
500
Load Circuit
TEST tpv
S1 2 VDD
SA00652
Figure 20. Test circuit
2004 Sep 30
16
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
SO24: plastic small outline package; 24 leads; body width 7.5 mm
SOT137-1
2004 Sep 30
17
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm
SOT355-1
2004 Sep 30
18
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
HVQFN24: plastic thermal enhanced very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.85 mm
SOT616-1
2004 Sep 30
19
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
REVISION HISTORY
Rev _2 Date 20040930 Description Product data sheet (9397 750 14048). Supersedes data of 2004 Aug 27 (9397 750 12898). Modifications:
* Section "Registers 0 and 1--Input Port Registers" on page 6:
- add table and second paragraph
* Figure 11 on page 11: resistor values modified * "DC Characteristics" table on page 13:
- sub-section "I/Os": change VIL (max) from 0.8 V to 0.3VDD change VIH (min) from 2.0 V to 0.7VDD - sub-section "Select inputs A0, A1, and RESET: change VIL (max) from 0.8 V to 0.3VDD change VIH (min) from 2.0 V to 0.7VDD
* Figure 15 on page 15 modified.
_1 20040827
Product data sheet (9397 750 12898).
2004 Sep 30
20
Philips Semiconductors
Product data sheet
16-bit I2C and SMBus, low power I/O port with interrupt
PCA9539
Purchase of Philips I2C components conveys a license under the Philips' I2C patent to use the components in the I2C system provided the system conforms to the I2C specifications defined by Philips. This specification can be ordered using the code 9398 393 40011.
Data sheet status
Level
I
Data sheet status [1]
Objective data sheet
Product status [2] [3]
Development
Definitions
This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN).
II
Preliminary data sheet
Qualification
III
Product data sheet
Production
[1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. [3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes -- Philips Semiconductors reserves the right to make changes in the products--including circuits, standard cells, and/or software--described or contained herein in order to improve design and/or performance. When the product is in full production (status `Production'), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
Contact information
For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825
(c) Koninklijke Philips Electronics N.V. 2004 All rights reserved. Printed in U.S.A. Date of release: 09-04
For sales offices addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.
Document order number:
9397 750 14048
Philips Semiconductors
2004 Sep 30 21

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