ITEM NAME:Stm32F103Cbt6 Maple Mini Arm Stm32 Cortex-M3 Main Control Board L3L8 Stm32F103Cbt6 Maple Mini Arm Stm32 Cortex-M3 Main Control Board L3L8 Application:Computer.Processor:STM32F103CBT6,32 ARM Cortex-M3 processor. Maple Mini has a total of 34 input / output pins,numbered from D0 to D33. Support for low-power,sleep and standard mode (Less than 500 A). 2 SPI channel.