ITEM NAME:STM32F103C8T6 UART STM32 Minimum System Development Board Module For Arduin A3Z8 STM32F103C8T6 UART STM32 Minimum System Development Board Module For Arduin A3Z8 Model: STM32F103C8T6. Core: ARM 32 Cortex-M3 CPU. Debug mode: SWD. Size:53.34mm x 22.86mm. Colour: blue Material:CCL 72MHz work frequency. 64K flash memory, 20K SRAM. 2.0-3.6V power, I/O. Reset(POR/). 4-16MHz crystal. On-board Mini USB interface, you can give the board power supply and USB communication. For usb connection to PC, ST-Link V2 Emulator debugger is required. Packaging includes: 1x ARM Cortex-M3 STM32F103C8T6 STM32 Minimum System Development Board Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.