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Part No.	W541L261
Datasheet	W541L261.pdf
Description	The W541L261 are high-performance 4-bit microcontroller (uC) with an LCD driver 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 W541L261 have two power reduction modes, hold mode and stop mode, which help to minimize power dissipation. The W541L261 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.
Features	Operating voltage: 1.2V to 3.6V (LCD drive voltage: 3.0V or 4.5V) ‧Operating frequency 4MHz: 1.5V~3.6V 1MHz: 1.2V~3.6V ‧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. ‧ Memory 2048x16 bit program ROM (including 2k  4 bit look-up table) 128 x 4 bit data RAM (including 16 working registers) 32 x 4 LCD data RAM ‧21 input/output pins ‧ Two Power-down mode: Hold mode and Stop mode ‧Five types of interrupts ‧LCD driver output: 32 segment  4 common ‧MFP output pin ‧Two built-in 14-bit clock frequency divider circuit (divider 0 and divider 1) ‧Two built-in 8-bit programmable countdown timers ‧Built-in 18/14-bit watchdog timer selectable for system reset
Diagram	N/A
Package	Dice or 80 QFP
Other Files	N/A
Development Tools	WHS-W5410
Others	N/A

 

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