A low cost small size USB dev board based on WCH CH552G.
CH552G can be replaced by CH551G and CH554G, in fact these models have the same Die.
CH559G/CH558G/CH557G/CH556G can also be soldered on CH552Nano board. Six GPIOs will change in this case.
| PIN | CH552G | CH549G |
|---|---|---|
| 1 | P3.2 | P1.1 |
| 7 | P3.1 | P3.0 |
| 8 | P3.0 | P3.1 |
| 9 | P1.1 | P3.4 |
| 10 | P3.3 | P2.2 |
| 11 | P3.4 | P2.4 |
