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W541E/C261 DATA SHEET
4BIT MICROCONTROLLER, 2K x16 ROM, 128 x4 RAM 128 -DOT LCD
Table of Contents1. 2. 3. INTRODUCTION......................................................................................................................... 2 FEATURES ................................................................................................................................. 3 ARCHITECTURE ........................................................................................................................ 5 3.1 3.2 3.3 4. 5. 6. 7. 8. 9. BLOCK DIAGRAM.......................................................................................................... 5 PIN CONFIGURATION................................................................................................... 6 PAD DESCRIPTION....................................................................................................... 7
ABSOLUTE MAXIMUM RATINGS ............................................................................................. 8 DC CHARACTERISTICS............................................................................................................ 9 AC CHARACTERISTICS .......................................................................................................... 10 TYPICAL APPLICATION CIRCUIT........................................................................................... 11 PACKAGE DIMENSION ........................................................................................................... 12 VERSION HISTORY ................................................................................................................. 13
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Publication Release Date: June 12, 2007 Revision A1
W541E/C261 DATA SHEET
1. INTRODUCTION
The W541E261 and W541C261 are high-performance 4-bit microcontroller (C) with an LCD driver and the flash EEPROM and mask ROM for the program memory. The device contains a 4-bit ALU, two 8-bit timers, two dividers, a 32 x 4 LCD driver, and five 4-bit I/O ports (including 1 output port to drive the LEDs). There are also five interrupt sources and 8-level subroutine nesting for interrupt applications. The W541E261 and W541C261 have two power reduction modes, hold mode and stop mode, which help to minimize power dissipation. The W541E261 and W541C261 have two oscillator circuits and can work in dual-clock or single-clock operation mode. It is suitable for remote controllers, watches and clocks, speech synthesis LSI controllers, hand-held games and other products.
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W541E/C261 DATA SHEET
2. FEATURES
* * * * Operating voltage: 2.4V to 5.5V (LCD drive voltage: 3.0V, or 4.5V) Operating frequency up to 4 MHz Crystal/RC oscillation circuit selectable by code option for system clock Memory - 2048 x 16 bit program ROM (including 2K x 4 bit look-up table) - 128 x 4 bit data RAM (including 16 working registers) - 32 x 4 LCD data RAM Single or Dual Clock Mode - Single (main oscillator only) or dual clock (both main and sub-oscilator) by mask option . - Dual-clock slow operation mode: system is operated by the sub-oscillator (FOSC = Fs and Fm is stopped) - - - * - - - - * Sub-oscillator is only 32.768 KHz crystal for dual clock mode. Main oscillator is crystal or RC oscillation by mask code option . Main clock : High-frequency clock (400 KHz to 4 MHz) or low-frequency clock (32.768 KHz) is selected by mask code option. 21 input/output pins Ports for input only: 2 ports/8 pins Input/output ports: 2 ports/8 pins Port for output only: 1 port /4 pins (high sink current to drive LEDs) MFP output pin: 1 pin (MFP)
*
Power-down mode - Hold function: no operation (except for oscillator) - Stop function: no operation Five types of interrupts - Four internal interrupts (Divider 0, Divider 1, Timer 0, Timer 1) - One external interrupt (Port RC) LCD driver output 32 segment x 4 common Static, 1/2 duty (1/2 bias), 1/3 duty (1/2 or 1/3 bias), 1/4 duty (1/3 bias) driving mode can be selected - LCD driver output pins can be used as DC output ports; selectable by code option - - MFP output pin - - Output is software selectable as modulating or nonmodulating frequency Works as frequency output specified by Timer 1 Two built-in 14-bit clock frequency divider circuit (divider 0 and divider 1)
*
*
*
*
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Publication Release Date: June 12, 2007 Revision A1
W541E/C261 DATA SHEET
* - - Two built-in 8-bit programmable countdown timers Timer 0: one of two internal clock frequencies (FOSC/4 or FOSC/1024) can be selected Timer 1: includes an auto-reload function; and one of three internal clock frequencies (FOSC or FOSC/64,Fs) can be selected or falling edge of pin RC.0 can be selected (output through MFP pin) Built-in 18/14-bit watchdog timer selectable for system reset Powerful instruction set: 120 instructions 8-level subroutine (include interrupt) nesting Up to 1 S instruction cycle (with 4 MHz operating frequency) Packaged in 80-pin QFP
* * * * *
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W541E/C261 DATA SHEET
3. ARCHITECTURE
3.1 BLOCK DIAGRAM
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Publication Release Date: June 12, 2007 Revision A1
W541E/C261 DATA SHEET
3.2 PIN CONFIGURATION
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W541E/C261 DATA SHEET
3.3 PAD DESCRIPTION
SYMBOL
XIN1
I/O
Input pin for oscillator. I
FUNCTION
Connected to crystal or resistor to generate system clock by code option. External 15~20pF capacitor uses to get accurate freq in crystal mode. Output pin for oscillator
XOUT1
O
Connected to crystal or resistor to generate system clock by code option. 20PF capacitor is built in internal for crystal mode. Input pin for sub-oscillator. Connected to a 32.768 KHz crystal. External 15~20pF capacitor uses to get accurate freq in crystal mode.. oscillator. Connected Output pin for sub to a 32.768 KHz crystal. 20PF capacitor is built in internal for crystal mode. Input/Output port. Input/output mode specified by port mode 1 register (PM1). Input/Output port. Input/output mode specified by port mode 2 register (PM2). 4-bit port for input only. Each pin has an independent interrupt capability. 4-bit port for input only. Output port only. This port provides high sink current to drive LEDs.
XIN2 XOUT2 RA0 -RA3 RB0 -RB3 RC0 -RC3 RD0 -RD3 RE0 -RE3 /INT
I O I/O I/O I I O I
External interrupt pin with pull-high resistor. This pin is bonding option for the W541C250 body. Only for W541E261.
Output pin only. This pin can output modulating or nonmodulating frequency, or Timer 1 clock output specified by mode register 1 (MR1). System reset pin with pull-high resistor. LCD segment output pins. Can also be used as DC output ports specified by code option. LCD common signal output pins.
Static COM0 Used Not Used Not Used Not Used 1/2 Duty Used Used Not Used Not Used 1/3 Duty Used Used Used Not Used 1/4 Duty Used Used Used Used
MFP
O I O
RES
SEG0-SEG31
COM0-COM3
O
COM1 COM2 COM3
The LCD alternating frequency can be selected by code option. DH1, DH2 VDD1, VDD2, VDD3 VDD I I I Connection terminals for voltage doubler (halver) capacitor. Positive (+) supply voltage terminal. Refer to Functional Description. Positive power supply (+).
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Publication Release Date: June 12, 2007 Revision A1
W541E/C261 DATA SHEET
PAD DESCRIPTION, continued
SYMBOL
VSS
I/O
I I Negative power supply (-).
FUNCTION
VPP
MODE
Voltage control pin for the flash EEPROM programming, erasing and verifying. This pin has a built-in pull-low resistor. Only for W541E261. Mode selection pin for the flash EEPROM programming, erasing and verifying. This pin has a built-in pull-low resistor. Only for W541E261. Data I/O pin for the flash EEPROM programming and verifying. This pin has a built-in pull-low resistor. Only for W541E261.
I
DATA
I/O
4. ABSOLUTE MAXIMUM RATINGS
PARAMETER RATING UNIT
Supply Voltage to Ground Potential Applied Input/Output Voltage Power Dissipation Ambient Operating Temperature Storage Temperature
-0.3 to +7.0 -0.3 to +7.0 120 0 to +70 -55 to +150
V V mW C C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.
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W541E/C261 DATA SHEET
5. DC CHARACTERISTICS
(VDD-VSS = 3.0V, Fm = 4 MHz, Fs = 32.768 KHz, TA = 25 C, LCD on, no load; unless otherwise specified)
PARAMETER Operation current
SYM.
CONDITIONS Normal operation Slow operation Crystal mode RC mode Crystal mode RC mode
MIN. -
TYP. 0.3 1 3.5 135 500 2.0 0.1
MAX. 0.6 2 8.0 270 600 4.0 1
UNIT mA A A
IOP
Hold current Stop current
IHM ISM
Normal operation Slow operation Stop mode
A
(VDD-VSS = 3.0V, Fm = 4 MHz, Fs = 32.768 KHz, TA = 25 C, LCD on, Crystal mode, no load; unless otherwise specified)
PARAMETER
SYM.
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Op. Voltage Input Low Voltage Input High Voltage MFP Output Low Voltage MFP Output High Voltage Port RA, RB Output Low Voltage Port RA, RB Output High Voltage LCD Supply Current SEG0-SEG31 Sink Current (Used as LCD Output) SEG0-SEG31 Drive Current (Used as LCD Output) Segment Sink Current (Used as DC Output) Segment Drive Current (Used as DC Output) Port RE Sink Current Port RE Source Current
VDD VIL VIH VML VMH VABL VABH ILCD IOL1
IOL = 6.0 mA IOH = 6.0 mA IOL = 6.0 mA IOH = 3.0 mA All Seg. ON VOL = 0.4V VLCD = 0.0V VOH = 2.4V VLCD = 3.0V VOL = 0.4V VLCD = 0.0V VOH = 2.4V VLCD = 3.0V VOL = 0.9V VOH = 2.4V
2.4 VSS 0.7 VDD 2.4 2.4 90
-
5.5 0.3 VDD VDD 0.4 0.4 6 -
V V V V V V V A A
IOH1
90
-
-
A
ISL ISH IEL IEH
9 1.5
4.0 1.5 13.5 3.0
-
mA mA mA mA
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Publication Release Date: June 12, 2007 Revision A1
W541E/C261 DATA SHEET
Continued
PARAMETER
SYM.
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Port RA/RB Sink Current Port RA/RB Source Current Port MFP Sink current Port MFP Source current Input Port Pull-up Resistor
IABL IABH IML IML RCD RRES RINT RVPP RMODE RDATA
VOL = 0.4V VOH = 2.4V VOL = 0.4V VOL = 2.4V Port RC, RD VDD = 5V VDD = 5V VDD = 5V
3 1.5 3 3 100 100 100 0.5 0.5 50
6 3.0 6 6 350 150 150 1 1 100
600 200 200 1.5 1.5 150
mA mA mA mA K K K M M K
RES Pull-up Resistor
INT Pull-up Resistor
VPP Pull-down Resistor MODE Pull-down Resistor DATA Pull-down Resistor
6. AC CHARACTERISTICS
(VDD-VSS = 3.0V, TA = 25 C, unless otherwise specified)
PARAMETER
SYM.
CONDITIONS
MIN.
TYP.
MAX .
UNIT
RC type Op. Frequency FOSC Crystal type 1 (Option low speed type) Crystal type 2 (Option high speed type) Frequency Deviation by Voltage Drop for RC Oscillator Instruction Cycle Time Reset Active Width Interrupt Active Width f f TI TRAW1 TRAW2 TIAW
400
32.768 -
4000 KHz 4000
f(3V) f(2.4V) f(3V)
One machine cycle Dual clock Single colck FOSC = 32.768 KHz
1 1 1
4/FOSC -
25 -
% S S S
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W541E/C261 DATA SHEET
7. TYPICAL APPLICATION CIRCUIT
Vcc
VDD RA0 Output Signal RA3 RB0 RB1 RB2 RB3 RC0 RC1 RC2 RC3 RD0 RD1 RD2 RD3 COM3 SEG0 SEG31
0.1 uF
COM0
LCD PANEL (1/3 Bias 1/4 Duty)
DH1 DH2 VDD1 VDD2 VDD3
Connect to capacitor and VDD to generate LCD voltage Vcc
RES
0.1 uF
XOUT XIN OSCOUT
32.768 KHz
RE0 RE1 RE2 RE3 MFP Vcc
OSCIN
VSS
470
0.1 uF
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Publication Release Date: June 12, 2007 Revision A1
W541E/C261 DATA SHEET
8. PACKAGE DIMENSION
80-Lead QFP
H D
80
D
65
1
64
E
HE
24
41
25
e
b
40
c
2
A See Detail F Seating Plane
1
A
L L
1
y
A
Detail F
Dimension in Inches
Dimension in mm
Symbol
Min.
Nom.
Max.
Min.
Nom.
Max.
A A1 A2 b c D E e HD HE L L1 y
0.130 0.004 0.107 0.012 0.004 0.546 0.782 0.025 0.728 0.964 0.039 0.087 0.112 0.014 0.006 0.551 0.787 0.031 0.740 0.976 0.047 0.094 0.117 0.018 0.010 0.556 0.792 0.037 0.752 0.988 0.055 0.103 0.004 0 12 0 0.10 2.73 0.30 0.10 13.87 19.87 0.65 18.49 24.49 1.00 2.21 2.85 0.35 0.15 14.00 20.00 0.80 18.80 24.80 1.20 2.40
3.30
2.97 0.45 0.25 14.13 20.13 0.95 19.10 25.10 1.40 2.62 0.10 12
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W541E/C261 DATA SHEET
9. VERSION HISTORY
VERSION DATE PAGE DESCRITION
A1
June 12, 2007
-
Formal Release
Important Notice
Winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surgical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. Further more, Winbond products are not intended for applications wherein failure of Winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. Winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Winbond for any damages resulting from such improper use or sales.
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Publication Release Date: June 12, 2007 Revision A1

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