Why Do Some Arduino-compatible Boards Provide A Crystal For The ...

Trang chủ » Ch340c Vs Ch340g » Why Do Some Arduino-compatible Boards Provide A Crystal For The ...

Có thể bạn quan tâm

Closed. This question is off-topic. It is not currently accepting answers.

Questions on the use of electronic devices are off-topic as this site is intended specifically for questions on electronics design.

Closed 6 years ago.

Improve this question

I have an uno-shaped Arduino compatible which uses the CH340(G) serial to ttl converter chip and it is connected to an external crystal.

I also have nano shaped compatible which uses the CH340(C) serial to ttl converter chip which has no external crystal although it does have pads ready to accept one.

My question is: Why does the one board's serial chip require a crystal and the other not? is it because they use different CH340 variants? And also why is there the need for the space for an external crystal on the smaller board?

Từ khóa » Ch340c Vs Ch340g