1, the onboard STM8S103K3T6 chips.
2, the onboard SWIM interface and the reset button.
3, set aside the external crystal vibration welding position.
4, with 5 chips AMS1117-3.3 V to 3.3 V.
5, all the I/O derivation, and mark the I/O name.
6, the onboard the Mini USB interface, can give the board power supply.
7, the board size: 31.7 (mm) x25 (mm).