STM32G474CE core board

The G474 core board was drawn in preparation for the power supply question of the 2020 TI Cup Electric Competition Provincial Competition. Because it has HRTIM, it can generate high-resolution PWM.
 
Since the wiring of this project is too messy, the V2 version has been drawn: https://oshwhub.com/soulhand/stm32g474ce_core_board_copy
 
Onboard resources:
24MHz crystal oscillator
32768Hz crystal oscillator
IPS240*240 screen interface
SWD debugging interface
Micro-USB power supply or pin header power supply
3.26V voltage reference (using TL431)
One reset button with TVS electrostatic protection
One user button with TVS electrostatic protection
5V input undervoltage protection
5V output overheating and short-circuit protection
Note:
The input voltage should be around 5V
 
 
 
20200927 PCB arrived and is ready for welding;
 
 
20200930 Welding is completed and waiting for testing;
 
 
20200930 PB5 lighting test was successful
 
 
on 20201005. Using this core board as the control board, the 12V-5V BUCK buck converter was completed.
Its HRTIM was used to generate PWM waves with a frequency of 100k and a resolution of up to 1/54400.