摘要
本文介绍了一种无需微控制器控制的RS232/485转换器,实现了纯硬件的收发控制切换以及串口取电功能,从而避免了常规RS232/485转换器需要对微控制器进行软件编程且通用性不好的问题,具有很好的可行性。
The paper introduces a mcu-free RS232/485 converter that realizes the function of switching between receiving state and transmitting state purely through hardware. Plus, it can also get power supply from serial port. All the features above avoid the trouble of micro control unit programming and the disadvantage in general use aspect, thus it can be widely used in reality.
出处
《微计算机信息》
北大核心
2005年第3期149-149,191,共2页
Control & Automation
关键词
串口切电
收发控制切换
RS232/485转换器
power supply from serial port
Switching between receiving and transmitting state
RS232/485 converter
