| 基于CH341A的USB串口通讯设计 |
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| 引用本文： | 杨凤彪,王超,张晨光. 基于CH341A的USB串口通讯设计[J]. 电子设计工程, 2011, 19(3): 11-14 |
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| 作者姓名： | 杨凤彪 王超 张晨光 |
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| 作者单位： | 军械工程学院,河北,石家庄,050003 |
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| 摘 要： | 为解决当前计算机串行通讯接口只有USB,难以满足旧型号设备或某些单片机要求RS232通讯的问题,设计出两款RS232/USB电路.采用CH341A与MAX223集成电路芯片构建标准9线RS232/USB通用接口转换嚣,无需缟程.采用CH341A与PIC16F877A构建单片机与计算机之间的USB通讯电路,软件遵循RS2...
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| 关 键 词： | USB RS232C 通讯 接口 |
Design of USB serial communication based on CH341A |
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| YANG Feng-biao,WANG Chao,ZHANG Chen-guang. Design of USB serial communication based on CH341A[J]. Electronic Design Engineering, 2011, 19(3): 11-14 |
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| Authors: | YANG Feng-biao WANG Chao ZHANG Chen-guang |
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| Affiliation: | (Ordnance Engineering Institude,Shijiazhuang 050003,China) |
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| Abstract: | To solve the problem that current computer serial communication only with USB interface can not satisfy with the old type equipments or MCU to communicate with RS232,two kinds of RS232/USB circuit were designed.CH341A and MAX223 integrated circuit chips were used to create a standard 9-line RS232/USB universal interface convertor without programme.CH341A and PIC16F877A chips were adopted to build the USB communication circuit between computers and MCU.The software follows RS232 communication protocol,and the hardware converts electrical levels.Actual practices indicate that the two manufactures are compatible with serial application program of Windows operation system completely,and get avoid of handshake lost. |
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| Keywords: | USB RS232C communication interface |
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