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PRELIMINARY W541E20X
4-BIT FLASH EPROM MICROCONTROLLER
GENERAL DESCRIPTION
The W541E20X is fully compatible with W741E20X in terms of pin assignment and IC function. It is a high-performance 4-bit microcontroller (C) that provides an flash EEPROM for the program memory. The device contains a 4-bit ALU, two 8-bit timers, a divider, a serial port, and five 4-bit I/O ports (including 3 output port for LED driving). There are also seven interrupt sources and 8-level subroutine nesting for interrupt applications. The W541E20X has two power reduction modes, hold mode and stop mode, which help to minimize power dissipation. The W541E20X is suitable for end product manufacturer engineering testing and earlier samples before mass production.
FEATURES
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Operating voltage: 2.4V-5.5V Crystal or RC oscillation circuit can be selected by the code option - Crystal/Ceramic oscillator: up to 4 MHz - RC oscillator: up to 4 MHz Both in crystal or RC oscillator operation mode, high-frequency (400 KHz to 4 MHz) or low-frequency (32.768 KHz) oscillation must be determined by the code option Memory -2048 x 16 bit program flash EEPROM (including 2K x 4 bit look-up table) -128 x 4 bit data RAM (including 16 working registers) 21 input/output pins -Input/output ports: 4 ports/16 pins -Serial input/output port: 1 port /4 pins (high sink current for LED driving) - MFP output pin: 1 pin (MFP) - Do not be floating when it is as input or output open-drain (NMOS type). Power-down mode -Hold function: no operation (except for oscillator) -Stop function: no operation (including oscillator) Seven types of interrupts -Five internal interrupts (Divider 0, Timer 0, Timer 1, and Serial I/O) -Two external interrupts (Port RC and INT pin) MFP output pin -Output is software selectable as modulating or nonmodulating frequency -Works as frequency output specified by Timer 1 Built-in 14-bit clock frequency divider circuit Two built-in 8-bit programmable countdown timers - Timer 0: One of two internal clock frequencies (FOSC/4 or FOSC/1024) can be selected Publication Release Date: June 2003 Revision A2
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Preliminary W541E20X
- Timer 1: Offers auto-reload function and one of two internal clock frequencies (FOSC or FOSC/64) 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: 118 instructions 8-level subroutine (include interrupt) nesting One serial transmission/receiver port specified by software Up to 1 S instruction cycle (with 4 MHz operating frequency) Packaged in 18-pin, 20-pin, 28-pin PDIP and 20-pin, 28-pin SOP
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Preliminary W541E20X
BLOCK DIAGRAM
RAM (128*4)
PORT RA VPP (RES) DATA (RA3) MODE (INT) Flash EEPROM (2048*16)
(look_up table 2K*4)
+1(+2)
RA0 to 3
ACC PORT RB RB0 to 3
ALU
PORT RC PC
RC0 to 3
Central Control Unit
IEF HEF EVF PEF SEF
PORT RD
RD0 to 3
STACK (8 Levels)
HCF
PSR0 PSR1 PSR2 PR MR0 PM0
PORT RT
SEL
.
.
.
RE0 to 3
(RE0/DOUT, RE1/CLKO, RE2/DIN, RE3/CLKI)
Serial I/O
MUX
Timer 0 (8-bit)
Timer 1 (8-bit)
Modulation Frequency Pulse
SEL
MUX
MFP
Watchdog Timer (4-bit)
Divider 0 (14-bit)
VDD VSS Timing Generator RES INT
XIN
XOUT
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Publication Release Date: June 2003 Revision A2
Preliminary W541E20X
PIN CONFIGURATIONS
W541E202/W541E205
RA2 (DATA) RA3 (MODE) /INT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 RA1 RA0 XIN XOUT VDD RD3 RD2 RD1 RD0 RC3 RC2 RC1 RC0 MFP
W541E201
RA2 (DATA) RA3 (MODE) /INT (Vpp) /RES VSS RB0 RB1 RB2 RB3 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 RA1 RA0 XIN XOUT VDD RC3 RC2 RC1 RC0
(Vpp) /RES VSS RE0 RE1 RE2 RE3 RB0 RB1 RB2 RB3 NC
18-PDIP (300 mil)
28 SKINNY (300 mil), 28 SOP
W541E203
RA2 (DATA) RA3 (MODE) /INT (Vpp) /RES VSS VSS RB0 RB1 RB2 RB3 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 RA1 RA0 XIN XOUT VDD VDD RC3 RC2 RC1 RC0 RA2 (DATA) RA3 (MODE) /INT (Vpp) /RES VSS VSS RB0 RB1 RB2 RB3
W541E204
1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 RA1 RA0 XIN XOUT VDD VDD RC3 RC2 RC1 RC0
20-PDIP (300 mil)
20 SOP
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Preliminary W541E20X
PIN DESCRIPTION
SYMBOL XIN I/O I FUNCTION Input pin for oscillator. Connected to crystal or resistor to generate system clock by code option. External 10~20pF capacitor uses to get accurate freq in crystal mode. Output pin for oscillator. Connected to crystal or resistor to generate system clock by code option. 20pF capacitor is built in internal for crystal mode. Input/Output port. Input/output mode specified by port mode 1 register (PM1). When used as output port, can provide high sink current for driving LED. I/O Input/Output port. Input/output mode specified by port mode 2 register (PM2). When used as output port, can provide high sink current for driving LED. RC0-RC3 I/O Input/Output port. Input/output mode specified by port mode 4 register (PM4). Each pin has an independent interrupt capability in input mode. RD0-RD3 RE0/DOUT, RE1/CLKO, RE2/DIN, RE3/CLKI MFP I/O I/O Input/Output port. Input/output mode specified by port mode 5 register (PM5). Special input/output port. This port can be configured by software to act as the output of internal port RT or the serial I/O port. When used as output port, can provide high sink current for driving LED. O Output pin only. This pin can output modulating or nonmodulating frequency, or Timer 1 clock output specified by mode register 1 (MR1).
1 INT (MODE)
XOUT
O
RA0-RA2, RA3 (DATA) RB0-RB3
I/O
I
External interrupt pin. This pin must be tied to VDD through an external resistor. It is a low active and floating input pin.
RES (VPP)
1
I
System reset pin. This pin must be tied to VDD through an external resistor when it is not used to reset this chip. It is a low active and floating input pin.
VDD VSS
I I
Positive power supply (+). Negative power supply (-).
Note: There are internal pull-high resistors in these pins of W741C20X.
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Publication Release Date: June 2003 Revision A2
Preliminary W541E20X
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage to Ground Potential Applied Input/Output Voltage Power Dissipation Ambient Operating Temperature Storage Temperature RATING -0.3 to +7.0 -0.3 to +7.0 120 0 to +70 -55 to +150 UNIT 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.
DC CHARACTERISTICS
(VDD-VSS = 3.0 V, Fosc. = 32.768 KHz, Ta = 25 C; unless otherwise specified)
PARAMETER
Op. Voltage Op. Current (Crystal type) Op. Current (RC type) Hold Current (Crystal type) Hold Current (RC type) Stop Current (Crystal type) Stop Current (RC type)
SYM.
VDD IOP1 IOP2 IHM1 IHM2 ISM1 ISM2
CONDITIONS
No load (Ext-V) No load (Ext-V) Hold mode No load (Ext-V) Hold mode No load (Ext-V) Stop mode No load (Ext-V) Stop mode No load (Ext-V)
MIN.
2.4 -
TYP.
8.5 36 4 16 0.1 0.1
MAX.
5.5 20 65 6 40 2 2
UNIT
V A A A A A A
Input Low Voltage Input High Voltage MFP Output Low Voltage MFP Output High Voltage Port RA, RB Sink Current Port RA, RB Source Current Port RC, RD Output Low Voltage Port RC, RD Output High Voltage Port RE Sink Current Port RE Source Current DIN Pin Pull-up Resistor
VIL VIH VML VMH IABL IABH VCDL VCDH IEL IEH RDIN
IOL = 3.5mA IOH = -3.5mA VOL = 0.9V VOH = 2.4V IOL = 2.0 mA IOH = -2.0 mA VOL = 0.9V VOH = 2.4V RE.2 used as serial input pin
VSS 0.7 VDD 2.4 9 0.4 2.4 9 0.4 50
1.2 1.2 250
0.3 VDD VDD 0.4 0.4 1000
V V V V mA mA V V mA mA K
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Preliminary W541E20X
AC CHARACTERISTICS
(VDD-VSS = 3.0 V, Ta = 25 C; unless otherwise specified)
PARAMETER
SYM.
CONDITIONS RC type
MIN. -
TYP. 32.768
MAX. 4000 -
UNIT
Op. Frequency
Fosc
Crystal type 1 (Option low speed type) Crystal type 2 (Option high speed type)
KHz
400
-
3580
Frequency Deviation by Voltage Drop for low freq. RC Oscillator Instruction Cycle Time Serial Port Data Ready Time Serial Port Data Hold Time Reset Active Width Interrupt Active Width
f f TI TDR TDH TRAW TIAW
f(3V) - f(2.4V) f(3V) One machine cycle Fosc = 32.768 KHz Fosc = 32.768 KHz
-
-
10
%
200 200 1 1
4/Fosc -
-
S nS nS S S
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Publication Release Date: June 2003 Revision A2
Preliminary W541E20X
TYPICAL APPLICATION CIRCUIT
Vcc
VDD RA0 Output Signal RA3 Vcc Vcc RB0 RB1 RB2 RB3 RC0 RC1 RC2 RC3
RD0 RD1 RD2 RD3
Vcc Vcc
INT RES XOUT or XIN VSS
RE0 RE1 RE2 RE3 MFP
Vcc
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Preliminary W541E20X
PACKAGE DIAMENSIONS
18-Lead PDIP (300 mil)
D
18 10
E1
1
9
S
2
E c
1
AA L B B1 e1
A
Base Plane
Seating Plane
\
eA
Dimension in inch
Dimension in mm
Symbol
Min.
0.010 0.125 0.016 0.058 0.008
Nom.
Max
0.175
Min
0.25
Nom.
Max.
4.45
A A1 A2 B B1 c D E E1 e1 L \ eA S
0.130 0.018 0.060 0.010 0.900
0.135 0.022 0.064 0.014 0.910 0.310 0.255 0.110 0.140 15
3.18 0.41 1.47 0.20
3.30 0.46 1.52 0.25 22.86
3.43 0.56 1.63 0.36 23.11 7.87 6.48 2.79 3.56 15
0.290 0.245 0.090 0.120 0 0.335
0.300 0.250 0.100 0.130
7.37 6.22 2.29 3.05 0 8.51
7.62 6.35 2.54 3.30
0.355
0.375 0.055
9.02
9.53 1.40
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Publication Release Date: June 2003 Revision A2
Preliminary W541E20X
Package Dimensions, continued
20-Lead PDIP
D
20 11
E
1
1
10
S
2
E
1
c
Base Plane Seating Plane
AA L B B1 e1
A
\
eA
Symbol
Dimension in inch
Dimension in mm
Min. Nom.
0.010 0.125 0.016 0.058 0.008 0.130 0.018 0.060 0.010 1.026 0.290 0.245 0.090 0.120 0 0.335 0.355 0.300 0.250 0.100 0.130
Max.
0.175
Min. Nom.
0.25
Max.
4.45
A A1 A2 B B1 c D E E1 e1 L
\
0.135 0.022 0.064 0.014 1.040 0.310 0.255 0.110 0.140 15 0.375 0.075
3.18 0.41 1.47 0.20
3.30 0.46 1.52 0.25 20.06
3.43 0.56 1.63 0.36 26.42 7.87 6.48 2.79 3.56 15
7.37 6.22 2.29 3.05 0 8.51
7.62 6.35 2.54 3.30
eA S
9.02
9.53 1.91
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Preliminary W541E20X
Package Dimensions, continued
28-Lead PDIP Skinny
D
28 15
E1
1
14
S
E
Base Plane
A A2 L B B
1
c
A1
Mounting Plane
e1 a eA
Dimension in Inches
Dimension in mm
Symbol
Min.
Nom.
Max.
0.175
Min.
Nom.
Max.
4.45
A A1 A2 B B1 c D E E1 e1 L
a
0.010 0.125 0.016 0.058 0.008 0.130 0.018 0.060 0.010 1.388 0.300 0.283 0.090 0.120 0 0.330 0.350 0.310 0.288 0.100 0.130 0.135 0.022 0.064 0.014 1.400 0.320 0.293 0.110 0.140 15 0.370 0.055
0.25 3.18 0.41 1.47 0.20 3.30 0.46 1.52 0.25 35.26 7.62 7.19 2.29 3.05 0 8.38 8.89 7.87 7.32 2.54 3.30 3.43 0.56 1.63 0.36 35.56 8.13 7.44 2.79 3.56 15 9.40 1.40
eA S
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Publication Release Date: June 2003 Revision A2
Preliminary W541E20X
Package Dimensions, continued
20-Lead SOP (300mil)
20
11
c
E HE
L
1
D
10
0.25
A Y SEATING PLANE b e A1 GAUGE PLANE
Control demensions are in milmeters.
Symbol
A A1 b c E D e HE Y L
Dimension in mm Min. 2.35 0.10 0.33 0.23 Max. 2.65 0.30 0.51 0.32 7.60 13.00
Dimension in Inches Max. 0.104 0.012 0.020 0.013 0.009 0.299 0.291 0.496 0.512 0.050 BSC 0.419 0.394 0.004 0.050 0.016 0 8 Min. 0.093 0.004 0.013
7.40 12.60 1.27 BSC 10.65 10.00 0.10 0.40 0 1.27 8
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Preliminary W541E20X
Package Dimensions, continued
28-Lead SOP (300 mil)
28
15
c
E HE
L
1
D
14
0.25
A Y SEATING PLANE b e A1 GAUGE PLANE
Control demensions are in milmeters .
Symbol A A1 b c E D e HE Y L Dimension in mm Min. Max. 2.35 2.65 0.10 0.30 0.33 0.51 0.23 0.32 7.40 17.70 7.60 18.10 Dimension in Inches Min. Max. 0.093 0.104 0.012 0.004 0.013 0.020 0.013 0.299 0.713 0.050 BSC 0.394 0.419 0.004 0.016 0.050 0 8 0.009 0.291 0.697
1.27 BSC 10.00 10.65 0.10 0.40 1.27 8 0
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Publication Release Date: June 2003 Revision A2
Preliminary W541E20X
Notes:
Headquarters
Winbond Electronics (H.K.) Ltd.
Rm. 803, World Trade Square, Tower II, No. 4, Creation Rd. III, 123 Hoi Bun Rd., Kwun Tong, Science-Based Industrial Park, Kowloon, Hong Kong Hsinchu, Taiwan TEL: 852-27513100 TEL: 886-3-5770066 FAX: 852-27552064 FAX: 886-3-5792766 http://www.winbond.com.tw/ Voice & Fax-on-demand: 886-2-27197006
Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Microelectronics Corp. Winbond Systems Lab.
2727 N. First Street, San Jose, CA 95134, U.S.A. TEL: 408-9436666 FAX: 408-5441798
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd., Taipei, Taiwan TEL: 886-2-27190505 FAX: 886-2-27197502
Note: All data and specifications are subject to change without notice.
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