我想在51单片机最小系统中用一个usb接头既能供电又能下载,请问怎么做?求芯片型号及电路图! 51单片机最小系统原理图
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一般用的都是pl2303，但是pl2303目前只有贴片，而无直插式的，所以如果你对自己的焊接技术有自信的话可以焊个试试，建议还是到淘宝买成品，usb转TTL模块即可，价格10元左右
最简洁的方式就是通过usb转串口然后给单片机下载，据了解能通过串口升级的有stc系列的51单片机。用个usb转串口芯片就可以了。便宜的芯片如pl2303.
去查查PL2303芯片就明白了；
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