Black Pill STM32 Arm Controller Module

Powerful and cheap alternative to the Pro Micro with USB-C socket

It is not physically compatible with the Pro Micro. The PCB needs to be specifically designed for it.

Please note, this is not a WeAct original product but a clone using the same STM32F401/411 MCU.

Features:

• Powerful Arm Cortex M4 core with high clock speed
• A lot more memory, flash and I/O pins than the Pro Micro
• USB-C socket
• DFU bootloader, can be programmed easily using dfu-util
• Runs on 3.3 V, but many pins are 5 V-tolerant
• On-board reset and boot buttons
• Comes with 2 20-pin headers and 1 4-pin programming header (not required thanks to the USB bootloader)

Two versions are available:

F401

• STM32F401CCU6 MCU
• Tinned PCB finish
• 84 MHz clock speed
• 64 kB SRAM
• 256 kB flash
• 35 I/O pins

F411

• STM32F411CEU6 MCU
• Gold-plated PCB finish
• 100 MHz clock speed
• 128 kB SRAM
• 512 kB flash
• 35 I/O pins

Both versions are pin-compatible.

(For comparison: the ATmega32u4 on the Pro Micro has 16 MHz clock, 2.5 kB SRAM, 32 KB flash and only 18 I/O pins.)