STM32F103C8T6 development board

stm32 development board, type-c interface power supply
development board supports two interfaces: a download interface and a serial port.
1. SWD program download and debugging interface, convenient for simulation debugging and program downloading (self-prepared ST-LINK V2 emulator)
2. Serial port interface, convenient for serial port debugging and program downloading (self-prepared USB to TTL module)
3. Leading out 5V power supply (type -c voltage straight out)

The PCB font uploaded by Jialichuang (the version has not been updated) is a bit abnormal. Try to download the AD version of the PCB (project attachment).

The PCB text of Jiali Chuang version has also been adjusted, but the specific effect has not been tested yet.

Update log:

V1.0

Add AMS1117 3.3V regulated power supply

V1.1

Gradually add 3D packaging and modify the position of the 5V power supply pin

V1.2 ( Currently only the AD version of the PCB in the engineering attachment is optimized. The Jiali Chuang version has not yet been optimized, but the functions are normal. It is best to use the attached PCB proofing safely )

Optimize the circuit, add AD 3D package, and remove unconnected pin marks (PB4 and PB5 schematic diagrams are not connected due to negligence, please modify them when you have time) 

V2.0 ( Important update )

Optimize the crystal oscillator circuit and add ground holes around the crystal oscillator to reduce interference. Part of the pins removed.

V3

Optimize the line, add PB5, delete PB2 (historical issues, the pins cannot be fully used, deleting a few will not affect the use)

Remove the plug-in package of BOOT1 and BOOT0. BOOT0 uses a switch form, which is mainly suitable for people who often debug (I almost vomited when changing the jumper cable)

In fact, it is better to use a DIP switch. If you only have ordinary ones on hand, just change to this one. You may change to a DIP switch later.

Change the 32.768mhz crystal oscillator package and change the patch to pin packaging. The patch is more expensive and reduces the cost.

The functional test is all normal and the program can be programmed normally.

Note: All resistor and capacitor LEDs are packaged in 0805. There is something wrong with the BOM table. Maybe some of the packages in my schematic diagram are not accurate, and I made them more casually.

The pictures are all from the first version and I am too lazy to update them for the time being.

This is not an advertisement, this is a crystal oscillator. You can also modify other sizes by yourself. The v3 version has been changed to pin crystal oscillator.