Product Lines arrow µC & µC-based Consumer IC arrow 4-bit uC
4-bit Microcontrollers Overview
Versatile 4-bit microcontrollers are applicable to a very broad array of cost sensitive applications such as handheld LCD games, wall-clock, home appliances, remote controllers and home security and thermal management devices. The W541 series comes with a wide selection of ROM and LCD driver density choices. Flash version is also available. The series is supported by Winbond hardware and software development tools including ICE, device programmer and WIDE (Winbond Integrated Development Environment)
  
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Key Features
Benefits
  • 115 instructions / 4-bit ALU
  • Fast 1uS/inst (4MHz)
  • Fully static CMOS design
  • LCD Controller option
  • Wide RAM / ROM / Flash options
  • Wide VDD (2.4V - 5.5V) option
  • 8-bit Timers / 14-bit Pre-scalers
  • Complete development system from Winbond
  • GPIO Ports
  • Low cost uC with die/package options
  • Low power modes for extended battery life
  • Low cost LCD based end-products
  • RC (low cost) or X’tal (precision) options
  • Generous I/O pins for input / output devices
  • Fast time to market with mature dev tools
Applications
  • Timepiece / Alarm Clocks
  • LCD Handheld Games
  • Home Security Systems
  • Thermostats
  • Remote controls
  • Kitchen appliance
  • Electronic scale

Product Selection Guide - W541 Series

Part Number
Description
Voltage
Package
Datasheet
W541C200
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 1 Serial I/O, INT input
2.4V ~ 5.5V
Die
W541C201
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 1 Serial I/O, INT input
2.4V ~ 5.5V
DIP-18
W541C202
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 1 Serial I/O, INT input
2.4V ~ 5.5V
SKDIP-28
W541C203
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 1 Serial I/O, INT input
2.4V ~ 5.5V
DIP-20
W541C204
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 1 Serial I/O, INT input
2.4V ~ 5.5V
SOP-20
W541C205
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 1 Serial I/O, INT input
2.4V ~ 5.5V
SOP-28
W541C240H/F
4-bit MCU w/2Kx16 ROM, 64x4 RAM, 13 I/Os, 24x4 LCD Driver, INT input
2.4V ~ 5.5V
Die, QFP-64
Request
PDF
W541C250H/F
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 24x4 LCD Driver, INT input
2.4V ~ 5.5V
Die, PQFP-64
W541C260H/F
4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 32x4 LCD Driver, INT input
2.4V ~ 5.5V
Die, PQFP-80
Request
PDF
W541C261H/F 4-bit MCU w/2Kx16 ROM, 128x4 RAM, 21 I/Os, 32x4 LCD Driver, INT input 2.2V ~ 5.5V Die, PQFP-80
W541C280H/F
4-bit MCU w/4Kx16 ROM, 256x4 RAM, 21 I/Os, 32x4 LCD Driver, INT input
2.2V ~ 5.5V
Die, PQFP-80
Request
PDF
W541C480H/F
4-bit MCU w/4Kx16 ROM, 256x4 RAM, 21 I/Os, 32x4 LCD Driver, INT input
2.4V ~ 5.5V
Die, PQFP-80
W541E200
W541C200 w/2Kx16 Flash EEPROM version
2.4V ~ 5.5V
Die
W541E201
W541C201 w/2Kx16 Flash EEPROM version
2.4V ~ 5.5V
DIP-18
W541E202
W541C202 w/2Kx16 Flash EEPROM version
2.4V ~ 5.5V
SKDIP-28
W541E203
W541C203 w/2Kx16 Flash EEPROM version
2.4V ~ 5.5V
DIP-20
W541E204
W541C204 w/2Kx16 Flash EEPROM version
2.4V ~ 5.5V
SOP-20
W541E205
W541C205 w/2Kx16 Flash EEPROM version
2.4V ~ 5.5V
SOP-28
W541E260H/F
W541C260/250/240 w/2Kx16 Flash EEPROM version
2.4V ~ 5.5V
Die, PQFP-80
Request
PDF
W541E261H/F
 4-bit MCU w/2Kx16 Flash, 128x4 RAM, 21 I/Os, 32x4 LCD Driver, INT input
2.2V ~ 5.5V
Die, PQFP-80
W541E280H/F
4-bit MCU w/4Kx16 Flash, 256x4 RAM, 21 I/Os, 32x4 LCD Driver, INT input
2.2V ~ 5.5V
Die, PQFP-80
Request
PDF
W541E480H/F
W541C40 w/4Kx16 Flash EEPROM version
2.4V ~ 5.5V
Die, PQFP-80
W541L200
W541C200 Low Voltage version
1.2V ~ 1.8V
Die
W541L201
W541C201 Low Voltage version
1.2V ~ 1.8V
DIP-18
W541L202
W541C202 Low Voltage version
1.2V ~ 1.8V
SKDIP-28
W541L203
W541C203 Low Voltage version
1.2V ~ 1.8V
DIP-20
W541L204
W541C204 Low Voltage version
1.2V ~ 1.8V
SOP-20
W541L205
W541C205 Low Voltage version
1.2V ~ 1.8V
SOP-28
W541L230
1Kx16 ROM, 64x4 RAM, 16x4 LCD data RAM
1.2V ~ 3.6V
PLCC-44
W541L231
1.5Kx16 ROM, 96x4 RAM, 16x4 LCD data RAM
1.2V ~ 3.6V
PLCC-44
W541L232
2Kx16 ROM, 128x4 RAM, 16x4 LCD data RAM
1.2V ~ 3.6V
PLCC-44
W541L240
W541C240 Low Voltage version
1.2V ~ 1.8V
Die, PQFP-64
W541L250H/F
W541C250 Low Voltage version
1.2V ~ 1.8V
Die, PQFP-64
W541L260H/F
W541C260 Low Voltage version
1.2V ~ 1.8V
Die, PQFP-80
W541L261H/F
W541C261 Low Voltage version
1.2V ~ 3.6V
Die, PQFP-80
W541L480H/F
W541C480 Low Voltage version
1.2V ~ 3.6V
Die, PQFP-80