1/2/5/10PCS STM32F103C8T6 ARM STM32 Minimum System Development Board Module
Model: STM32F103C8T6. Core: ARM 32 Cortex-M3 CPU. 4-16MHz crystal. 2.0-3.6V power, I/O. We will leave it for everyone that leaves it for us. 72MHz work frequency. Debug mode: SWD.