ARM Cortex-M3 STM32F103RBT6 STM32 Development Board - Deep Blue
On-board STM32F103RBT6 chip; With on-board JTAG interface and reset button; On-board 32.768KHZ and 8MHZ oscillator; With AMS1117-3.3 chip of 5V to 3.3V; With one set of RS232 serial ports UART1 and UART2 can be set by jumper wire; All I/O are led and marked; Power supply: USB and JLink Power On. User Manual: http://m5.img.dxcdn.com/CDDriver/CD/sku.295921.zip