AT32F415CB core board/universal small blue board

![image.png] # Introduction

Based on the AT32F415Cx core board, but through compatibility design, it can be compatible with almost all LQFP-48 packaged XX32 MCUs on the market.

There are models that have been **tested** and are compatible. Other models can also be used as long as the pin layout complies with the compatibility design of the core board.

*
AT32F415CBT7 *
AT32F421C8T7
* AT32F403ACGT7
* ST series
* STM32F103C8T6
* STM32F051C8T6
* STM32F030C8T6
* National series
* N32G430C8L7 *
Flash core micro series
* FCM32F103CBT6
* Jihai series
* APM 32F103CBT6
* GigaDevice Innovation Series
* GD32F103C8T6
* Hangshun Series
* HK32F103C8T6

# Note
** If you don’t understand what these operations are for, please do not solder MCUs other than AT32F415CBT7 on this core board! ! ! **
**If you don’t understand what these operations are for, then please do not solder MCUs other than AT32F415CBT7 on this core board! ! ! **
**If you don’t understand what these operations are for, then please do not solder MCUs other than AT32F415CBT7 on this core board! ! ! **

Before making, please confirm through the MCU data sheet that the MCU pins can be maintained compatible with the following optional components of this core board.

* If the MCU does not support USB (such as STM32F030C8), please do not solder R7, R8, R9
! [image.png] * Some MCU pins 35 and 36 are not general GPIO but power supply pins (such as STM32F103C8), please pass Solder R3 (0Ω), R4 (0Ω) and C7 (0.1uF) to power the MCU
! [image.png] * If you need to use the MCU's battery power interface, do not solder R12. If the battery is optional, then it is better to replace R12 with a diode
! [image.png] * Some MCU's NRST pin does not have a suitable pull-up resistor built in. In this case, please choose the appropriate resistor according to the MCU's data sheet Weld on the R13 position
![image.png]
# Demo
### NES emulator
![GIF.gif]
#Other pictures
### Does the black one look better or the blue one?
![image.png]