Winbond Electronics Corporation W742E-C81A
The W742E/C81A is a high-performance 4-bit microcontroller (µC) that provides an LCD driver. The device contains a 4-bit ALU, two 8-bit timers, two dividers (for two oscillators) in dual-clock operation, a 40 × 4 LCD driver, six 4-bit I/O ports (including 1 output port for LED driving), and one channel DTMF generator. The W742E/C81A operates on very low current and has two power reduction modes, that is the dual-clock slow operation and STOP mode, which help to minimize power dissipation.| Part No. | W742E-C81A |
|---|---|
| Datasheet | W742E-C81A Download |
| Manufacturer |  Winbond Electronics Corporation |
| Description | 4-BIT MICROCONTROLLER |
| Buy | Stock & Price |
GENERAL DESCRIPTION
There are also five interrupt sources and 16-levels subroutine nesting for interrupt applications. 2.FEATURES
● Operating voltage: 2.4V– 5.5V● Dual-clock operation or single-clock operation (By option)
● Main-oscillator − Connect to 3.58 MHz crystal or 400 KHz that can be selected by option code − Crystal or RC oscillator can be selected by code option
● Sub-oscillator − Connect to 32768 Hz crystal only
● Memory − 16384 x 16 bits program electrical erasable EPROM (including 64K x 4 bit look-up table) − 2048 x 4 bits data RAM (including 16 nibbles x 16 pages working registers) − 40 x 4 LCD data RAM
● 24 input/output pins − Port for input only: 1 ports/4 pins (RC) − Input/output ports: 3 ports/12 pins (RA, RB & RD) − High sink current output port for LED driving: 1 port /4 pins (RE) − Port for output only: 1 port/ 4 pins (RF)
● Power-down mode − Hold function: no operation (main-oscillator and sub-oscillator still operate) − Stop function: no operation (main-oscilla...
