Technical Specifications:

• Chip Description: STM32F103C8T6 Cortex-M3
• Package Type: LQFP
• Number of pins: 48
• Operating frequency: 72MHz
• Storage resources: 64K Byte Flash, 20KByte SRAM
• Interface Resources: 2x SPI, 3x USART, 2x I2C, 1x CAN, 37x I/O ports
• Analog-to-digital conversion: 2x ADC (12-bit / 16-channel)
• Timers: 3 general timers and 1 advanced timer
• Debug Download: Support JTAG / SWD debug interface to download, support for IAP.

Interface description:

• SWD interface: support for simulation, download and debug.
• Mirco USB interface: power supply and USB communication, does not support the download.
• USART1 interface: USART1 can be used to download the program, or use the USART1 for communication.
• MCU pin interface: leads all I / O port pins, easy to connect with peripherals.
• 5V and 3.3V power input and output interface: commonly used in external power supply, or with other modules for common ground treatment

Other Device Description:

• Power LED (PWR): Power indicator status, can determine whether the power supply is stable.
• The user LED (PC13): to facilitate the I / O output test or indicate the program running.
• Start jumping choose programming mode: (1, the user flash memory 2, SRAM 3, system memory).
• Reset button: reset chip for the user program.
• 8M Crystal: The frequency can be set to make the system clocked at 72MHz.
• 32.768KHz Crystal: Available for built-in RTC, or for calibration.