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A low cost small size USB dev board based on WCH CH552.

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CH552Nano

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

正面管脚图

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A low cost small size USB dev board based on WCH CH552.

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