STM32

Features

STM32F103
- 72 MHz
- 64KB Flash (most have 128KB)
- 20 KB SRAM
- 3.3V regulator
- 16 MHz
- 1 of x12-bit, A/D converter
- 7-channel DMA controller
- SPI, I2C, UART interfaces
- 7 timers
MicroUSB
Reset button
Download jumper
- Replaced with a slide switch
Power LED
PC 13 LED
SWD connector
RTC crystal
Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.

Not pin compatible with Blue Pill due to power pin locations

Can't be used on BLUE-PILL-HUB card without modifications

STM32F401CCU6 or STM32F411CCU6 CPU
- 84/100 MHz
- 256/512 KB Flash (most have 128KB)
- 64/128 KB SRAM
- 3.3V regulator
- 2x12-bit, A/D converter
- 7-channel DMA controller
- SPI, I2C, UART interfaces
- 7 timers
SPI ROM footprint
- Fits an W25Q32JVSSIQ
- 32 Mbit SPI Flash ROM,
USB-C
Reset button
Power LED
PC 13 LED
SWD connector
Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.

Warning: The +5V pins on this board are directly connected to the +5V pin of the USB connector. There is no protection in place. Do not power this board through USB and an external power supply at the same time.
Upper right pin is GND on Blue pill card, but is 5V on Black pill card
Reset is on a different pin
Some IO pins are om different spots

FTDI connection to Blue Pill Hub FTDI connector
- FTDI TX (to Blue Pill RX) (PA10 pin on STM32)
- FTDI RX (to Blue Pill Tx) (PA9 pin on STM32)
Set Switch (or jumper) on Blue Pill module set towards center of card to upload card to board