STM32F103C8 a main chip, soldered on the motherboard
8M crystal (up to 72M by chip PLL) ST official standard parameters
 LM1117-3.3V regulator chip provides a maximum of 800mA current
All the way miniUSB interface, the system can be powered version, aside USB communication
 Reset (download) button
function switching jumper pins set
 Astandard JTAG download port, support JLink, ULINK, STLink
Astandard SWD download interface, support JLink, ULINK, STLink
The user IO port all the leads Apower indicator
A functional indicator, used to validate the basic functions of the IO port
reserved for serial download interface and 5V development board, serial port to download program
 Size: 35x60mm