STC12C5A60S2 core board

• Based on the STC12C5A60S2 chip, the board integrates the CH330 serial port, crystal oscillator and power-on reset circuit. Size width: 30mm long: 52.3mm. It can be plugged into the DIP40 chip socket and breadboard.
• There are two LEDs, one is the power indicator and the other is the user LED using the P4.0 port.
• USB signal lines use differential wiring.
• The actual picture is the sample before optimization.
• The program is compiled using KEIL5.
• If there is a problem with the downloading program, please remove the short circuit between D1 and R4 and try again.
• There are two errors in DRC, which are caused by the USB through hole distance from the pad being too small and library problems. There is no solution for the time being, but it does not affect the use.

3D diagram

Physical map

The above circuits have been tested by me and can be used normally. You should have sufficient understanding of the above circuits and understand the risks involved. I do not make any functional or quality guarantees for the open source copies; I do not guarantee that you can use this product correctly and use this product. There are no issues with the product. If you have any problems while using this open source project, it has nothing to do with the project author.