CPU: GD32VF103CBT6 based on RISC-V 32-bit : for Xinlai Technology Main frequency: up to 108MHzWorking voltage: 2.6~3.6V consumption: 1/3 of -; Storage: 128KB Flash 32KB SRAMperipheral:4 x 16-bit timer2 x basic 16-bit timer1 x advanced 16-bit timerWatchdog, , Systick3 x USART2 x I2C3 x SPI2 x I2S2 x CAN1 x USBFS(OTG)2 x (10 channel)2 x DAC: 1 reset key and 1 key (connected to GPIO)Size: 47.50 mm x 20.00 mmScreen interface: SPI interfaceStorage interface: onboard TF card holderPower supply mode: USB Type-cIO: standard 2.54mm pin interface, leading out all resources of the chipDebugging interface: 2x4 row pin leads to JTAG debugging interface and serial portCrystal oscillator: 8MHz passive crystal oscillator+32.768 KHZ passive crystal oscillatorLED: 1 RGB LED on boardNumber of GPIOs: 2 leads 28 GPIOs to the pin Material: PCB+metalcolour: redPackage Contents:1 x development board2 x 2.54mm pin headerOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.