(+1Month Warranty) STM32F103C8T6 Board Blue Pill ARM STM32 Original Small System Microcontroller Module [ElectricA]

Compact and lightweight, easy to carry.
On-board Mini USB interface, you can give the board power supply and USB communication.
With voltage stabilizing chip, it is convenient for Micro USB interface plug into.
With High quality double row pin loader ensure good conductive contact.
Using SWD debugging interface, which needs three interface to complete debug download task at least.
Built-in adjustable 8 MHz RC oscillator.
Built-in 40 kHz RC oscillator with calibration.
With adjustable 32 kHz RTC oscillator.

Specification:
Model: STM32F103C8T6.
Core: ARM 32 Cortex-M3 CPU.
Debug mode: SWD.
72MHz work frequency.
64K flash memory, 20K SRAM.
2.0-3.6V power, I/O.
Reset(POR/PDR).
4-16MHz crystal.
12-bit analog-digital converter: 2pcs
I/O port: 37pcs
TIMx: 3pcs; Advanced timer: 1pc
SPII/SPI2: 2pcs
I2C1/12C2: 2pcs
USART1/USART2/USART3: 3pcs
Full Speed USB2.0: 1pc
Active 2.0B: 1pc
Size: approx. 55 x 22 x 6mm/2.16 x 0.86 x 0.23''
Weight: approx. 6g