The chip is CH32F103C8T6.
Product Introduction
This is a core chip based on for CS32F103C8T6 ARM core board, features are as follows:
1, the board based on the most basic MCU circuit, 8M and 32768 crystal circuit, USB power supply circuit.
2, the core board is divided into two rows leads to all the I / O port.
3, with SWD simulation debug download interface, simple and convenient, debugging speed.
4, the use of the Mirco USB interface, you can do USB communication and power supply, USB interface, compatible with the ordinary Andrews mobile phone charger interface.
5,  with double pin, but the pin does not default welding, the user according to their own application scenarios to choose their own welding direction. 
Keil can be used to compile, IAR compiler, can be downloaded through the J-Link or USART1 procedures, the procedures are the owner and debugging procedures.
 
Chip Description:
1, CS32F103C8T6
Package Type: LQFP;
Number of pins: 48;
Kernel: Cortex-M3;
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.
2, RT9193: 3.3V regulator chip, the maximum output of 300mA.
 
Interface description:
1, SWD interface: support for simulation, download and debug.
2, Mirco USB interface: power supply and USB communication, does not support the download.
3, USART1 interface: USART1 can be used to download the program, or use the USART1 for communication.
4, MCU pin interface: leads all I / O port pins, easy to connect with peripherals.
5, 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:
1, Power LED (PWR): Power indicator status, can determine whether the power supply is stable.
2, the user LED (PC13): to facilitate the I / O output test or indicate the program running.
3, start jumping choose programming mode: (1, the user flash memory 2, SRAM 3, system memory).
4, reset button: reset chip for the user program.
5, 8M Crystal: The frequency can be set to make the system clocked at 72MHz.
6,32.768KHz Crystal: Available for built-in RTC, or for calibration.
Package:
1x STM32F103C8T6 ARM STM32 Minimum System Development Board Module For CH32F103C8T6
 
The chip is CH32F103C6T6.
STM32F103C6T6
Flash
32K
RAM
10K
Timer
3 （Without timer 4)
Serial ports
2 （Without serial port 3）
1. One STM32F103C6T6 main chip
2. SMD 8M crystal oscillator (up to 72M through the internal PLL of the chip) ST official standard parameters
3. 3.3V voltage regulator chip, maximum 800mA current
4. One miniUSB interface, which can supply power to the system version and reserve USB communication function
5. Reset button
6. One standard SWD port, support JLink, STLink, JLINK OB
7. BOOT select port
8. IO extension header 20pin x 2
9. 1 power indicator
10. One function indicator, used to verify the basic functions of the IO port
11. Reserve a serial port for easy connection with the 5V development board, and you can use the serial port to program
12. High-performance Epson 32768Hz crystal oscillator, the price is 10 times the price of in-line crystal oscillator, easy to start vibration
13. 10K RAM, 32K ROM, TQFP48 package