ITEM NAME:STM32F10LJ8T6 ARM STM32 Minimum System Development Board Module For Arduino J Gw Descriptionï ¼Å¡ 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. On-board Mini USB interface, you can give the board power supply and USB communication. Size: 5.3cm x 2.2cm. Package included: 1 x STM32F103C8T6 ARM STM32 Minimum System Development Board.Core: ARM 32 Cortex-M3 CPU. 4-16MHz crystal. 2.0-3.6V power, I/O. Debug mode: SWD.