W742E81A - 4-BIT MICROCONTROLLER

Winbond

General Description

The W742E81A/W742C81A is a high-performance 4-bit microcontroller (µC) that provides an LCD driver.

Key Features

Operating voltage: 2.4V.
3.8V.
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 (W742E81A).
Connect to 2 MHz typical RC.

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W742E81A 4-bit microcontroller by Winbond - Datasheet Preview

Datasheet Details

Part number	W742E81A
Manufacturer	Winbond
File Size	534.67 KB
Description	4-BIT MICROCONTROLLER
Datasheet	W742E81A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Preliminary W742E81A/W742C81A 1. GENERAL DESCRIPTION 4-BIT MICROCONTROLLER The W742E81A/W742C81A 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. There are also five interrupt sources and 16-levels subroutine nesting for interrupt applications. The W742E81A/W742C81A 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. 2. FEATURES • Operating voltage: 2.4V−3.