W541C250 Datasheet, PDF (3/10 Pages) Winbond – 4-BIT MICROCONTROLLER

W541C250
• LCD driver output
− 24 segment × 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
• 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
− Timer 1: includes an 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: 119 instructions
• 8-level subroutine (include interrupt) nesting
• Up to 1 µS instruction cycle (with 4 MHz operating frequency)
• Packaged in 64-pin QFP
Publication Release Date: April 14, 2005
-3-
Revision A6