ch340g下载电路原理图

根据引用\[1\]和引用\[3\]的内容，CH340G的下载电路原理图可以参考原来第一版的CH340C自动下载器电路。该电路可以解决一些特殊的下载方式下RTS和DTR引脚联络信号不同步的问题。为了适配通用的自动下载，可以直接短接这两个引脚，避免联络信号不同的情况。具体的原理图可以参考《开源STC单片机免冷启动自动下载器》。
#### 引用[.reference_title]
- *1* *3* [CH340G版USB转串口自动下载器原理图](https://blog.csdn.net/weixin_42880082/article/details/122258938)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [ch340g电路图5v和3.3v供电电路](https://blog.csdn.net/chenhuanqiangnihao/article/details/118395189)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
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