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USB转232 转TTL概述
2022-06-11 04:29:00 【蓑衣客VS索尼克】
常用调试接口中，会经常用到USB转串口
首先是电脑USB转RS-232电平，再分其他情况
然后单片机是TTL电平 ，所以还需要 RS232转TTL，这样才能电脑才能直接和单片机通讯 常用芯片有CH340,PL2303，MAX232,CP2102等
如果是485通讯 ，电脑这边需要USB转RS-232电平再转485
如果是CAN通讯，也有USB转CAN的工具，具体需要分情况匹配
下面截取常用定义图：
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