usb转串口ch340电路图,usb转串口电路图

ch340g / ch340c 芯片上明明有这个引脚.在 dtr 引脚上串一个 0.
ch340c,ch340e 和ch340b 内置时钟,无需外部晶振,ch340b 还内置eeprom
其中ch340是比较常用的芯片,本文将介绍ch340与mcu串口连接的电路设计
ch340 usb转串口通信电路免费下载
ch340芯片usb转rs485参考电路