器件名称: W541E20X
功能描述: 4 BIT FLASH EPROM MICROCONTROLLER
文件大小: 93.62KB 共14页
简 介:PRELIMINARY W541E20X
4-BIT FLASH EPROM MICROCONTROLLER
GENERAL DESCRIPTION
The W541E20X is fully compatible with W741E20X in terms of pin assignment and IC function. It is a high-performance 4-bit microcontroller (C) that provides an flash EEPROM for the program memory. The device contains a 4-bit ALU, two 8-bit timers, a divider, a serial port, and five 4-bit I/O ports (including 3 output port for LED driving). There are also seven interrupt sources and 8-level subroutine nesting for interrupt applications. The W541E20X has two power reduction modes, hold mode and stop mode, which help to minimize power dissipation. The W541E20X is suitable for end product manufacturer engineering testing and earlier samples before mass production.
FEATURES
Operating voltage: 2.4V5.5V Crystal or RC oscillation circuit can be selected by the code option Crystal/Ceramic oscillator: up to 4 MHz RC oscillator: up to 4 MHz Both in crystal or RC oscillator operation mode, high-frequency (400 KHz to 4 MHz) or low-frequency (32.768 KHz) oscillation must be determined by the code option Memory 2048 × 16 bit program flash EEPROM (including 2K × 4 bit look-up table) 128 × 4 bit data RAM (including 16 working registers) 21 input/output pins Input/output ports: 4 ports/16 pins Serial input/output port: 1 port /4 pins (high sink current for LED driving) - MFP output pin: 1 pin (MFP) - Do not be floating when it is as input or output open-drain (NMOS type). Power-down mode Hold function: no operation……
