Referring to HT's official evaluation board, I designed a single-row pin header HT32F52352 development board, which leads out all GPIOs (special pins are not lead out, such as XTAL USB, etc.). The onboard SC226K is used as a 3.3V power supply, and the Debug interface is marked.
The width is limited by the component itself, and it is difficult to lower it again (first, there is no time, and second, it can be lowered by one or two hundred mil at most). Two breadboards need to be put together before the development board can be inserted into the breadboard.
USB all uses Type-C 16p.
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