Color: Blue - Material: PCB + plastic + metal - STM32F103RBT6: - CPU frequency: 72MHz - Flash: 128KB - RAM: 20KB - Timer: 4 - SPI connector: 2 - IIS connector: 2 - IIC connector: 2 - USART connector: 3 - USB connector: 1 - CAN connector: 1 - SDIO connector: 1 - ADC: 16 channels - I/O connector: 51 - Standard ARM JTAG 20 pin interface for JLINK ULINK2 etc. - USB power supply provides up to 800mA current - With 8M clock crystal oscillator 32.768KHz RTC clock crystal oscillator - All I/O connectors were lead out - 3 individual switches - Red LED power indicators 3 green LEDs - Reset mode: Power on reset / Switch reset - Packing list: - 1 x STM32 development board - 1 x USB cable (128cm)