基于GM814X的单片机串口扩展及其应用  

Design and implementation of serial port extension based on GM814X

作　　者：张伟[1] 李文魁[1] 陈永冰[1] 

机构地区：[1]海军工程大学,湖北武汉430033

出　　处：《电子技术应用》2012年第9期96-99,共4页Application of Electronic Technique

摘　　要：介绍了基于C8051F340单片机和GM814X串口扩展芯片的串口扩展方法。针对实际装备的通信和接口需求,进行了RS-485通信终端的电路软硬件设计。实际应用表明,该通信终端设计可靠,性价比高,解决了单片机在串行通信系统中的串口局限问题。This paper introduces a method of serial interface extension based on the C8051F340 MCU and the GM8141 chip, combines with the actual needs to design and implement, and gives the practical circuit of hardware and communication program section. The experimental application proved that the design is reliable, cost-effective and solves the limited serial port in the serial communication.

关 键 词：C8051F340 GM814X 串口扩展 串行通信 

分 类 号：TP334[自动化与计算机技术—计算机系统结构]