# CH643

RISC-V4C, 62KB Flash, 20KB SRAM.

OPA/PGA/CMP, LEDPWM, USB-PD/Type-C.

## Chips

```
* CH643W-0x64300601
* CH643Q-0x64310601
* CH643L-0x64330601
* CH643U-0x64340601
```