CH347 Multilevel Converter Programmer

Initially, the CH347 multi-level version was created to burn the F50L1G41LB and its 1.8V version. The CH341A is too outdated and I don't want
to use it, and the FT232H is too expensive and is still shelved. The other ports are just for trial use; whether they'll be usable is another matter.
 
Update 2023/10/29:
I've given up. The Yaojie host computer will produce errors no matter which LS (Level Switch) it uses. I guess I'll just have to rewrite the host computer because Yaojie is the one to blame.
The CH347's TX, TXS, and TXU have poor compatibility. Adding an ADUM121 optocoupler for isolation and level conversion only costs about 1 RMB, not too expensive.
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Do not use the Yaojie Windows host computer! Someone tested that the DEMO program provided by WCH can be burned, but the Yaojie host computer cannot because the signal lags by about 8ns after adding the level converter. However, the Yaojie Windows host computer does not provide sufficient buffer time for FLASH ID judgment, resulting in abnormal FLASH ID reading. Multiple users have reported this issue. Furthermore, the Yaojie Windows host computer supports too few FLASH chips. My personal
suggestion is to use Flashrom and spi-nand-prog until AsProgrammer supports CH347 . ———
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