Waveshare Open103C Standard Development Board Cortex-M4 Entwicklungskit STM32F103

Item number: WS0118S

MPN: Open103C Standard


Category: STM32

27,36 €

including 19% VAT.,

Available now!

Shipping time: 1 - 3 workdays



STM32 development board designed for STM32F103C series, features the STM32F103CBT6 MCU, and integrates various standard interfaces, pretty easy for peripheral expansions.

STM32F103CBT6 development board


Open103C is an STM32 development board that features an STM32F103CBT6 device as the microcontroller. There are further expansions with various optional accessory boards for specific application. The modular and open design makes it the ideal for starting application development with STM32F family.

What's On Board

 STM32F103CBT6 development board on board resource
  1. STM32F103CBT6: the high performance STM32 MCU which features
    • Core: ARM Cortex-M3 32-bit RISC
    • Operating Frequency: 72MHz, 1.25 DMIPS/MHz
    • Operating Voltage: 2-3.6V
    • Package: LQFP48
    • I/Os: 37
    • Memories: 128kB Flash, 20kB RAM
    • Communication Interfaces: 2 x SPI, 3 x USART, 2 x I2C, 1 x USB, 1 x CAN
    • AD & DA converters: 2 x AD (12-bit, 1µs, shares 10 channels)
    • Debugging/Programming: supports JTAG/SWD (serial wire debug) interfaces, supports IAP
  2. AMS1117-3.3: 3.3V voltage regulator
  3. Power supply switch: 5V DC or USB
  4. Power indicator
  5. LEDs: for indicating I/O status or program debugging running state
  6. Reset button
  7. User key: for I/O input test
  8. Joystick: for I/O input test (five positions)
  9. 32.768K crystal oscillator: used for internal RTC, also supports clock calibration
  10. 8M crystal oscillator: enables the MCU run at 72M frequency by frequency multiplication
  11. 8 I/O Interface: easily connects to keypad, motor, etc.
  12. CAN interface: communicates with accessory board which features the CAN device conveniently
  13. SPI1 / SPI2 interface
    • easily connects to SPI peripherals such as FLASH (AT45DBxx), SD card, MP3, etc.
    • convenient for connecting AD module, thanks to the SPI1 alternative AD function
  14. I2C1 / I2C2 interface: easily connects to I2C peripherals such as I/O expander (PCF8574), EEPROM (AT24Cxx), etc.
  15. LCD interface: easily connects to the touch screen LCD
  16. ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
  17. USART1 interface: easily connects to RS232, RS485, USB TO 232
  18. USART2 interface: easily connects to RS232, RS485, USB TO 232
  19. USB port: USB communication between board and PC
  20. 5V DC jack
  21. 5V/3.3 V power input/output, usually used for power output, or common ground with other user board
  22. MCU pins connector: all the MCU pins are accessible on expansion connectors for further expansion
  23. JTAG/SWD interface: for debugging/programming
  24. Boot mode selection: for configuring the BOOT0 and BOOT1 pins
  25. USB enable jumper
    • short the jumper to enable the PC auto detection while USB connecting
    • open the jumper to disable
  26. LEDs jumper
    • short the jumper to connect the LEDs to I/Os used in example code
    • open the jumper to connect the LEDs to other custom pins via jumper wires
  27. User key jumper
    • short the jumper to connect the user key to I/Os used in example code
    • open the jumper to connect the user key to other custom pins via jumper wires
  28. Joystick jumper
    • short the jumper to connect the joystick to I/Os used in example code
    • open the jumper to connect the joystick to other custom pins via jumper wires
  29. VBAT selection jumper
    • short the jumper to use system power supply
    • open the jumper to connect the VBAT to external power, such as battery

The Open103C supports programming via STM32 USART bootloader, a USB TO UART accessory board is also provided in the package. 
The Open103C does NOT integrate any debugging function, a debugger is required.
The Open103C Standard includes only ONE accessory board -- PL2303 USB UART Board (mini).

JTAG/SWD Interfaces

The figure 1, and 2 show the header pinouts of JTAG/SWD interface

Figure 1. JTAG Header Pinout
JTAG Header Pinout
Figure 2. SWD Header Pinout
SWD Header Pinout

Development Resources

The User Guide CD includes development resources listed as follows:

  • Related software (KEIL etc.)
  • Demo code (examples in C, µC/OS-II)
  • Schematic (PDF)
  • STM32 development documentations (Datasheet etc.)

Package Contains

  1. Open103C development board x 1
  2. PL2303 USB UART Board (mini) x 1
  3. USB type A to Mini-B cable x 1
  4. 4-pin wire x 2
  5. 2-pin wire x 2
  6. USB power cable x 1
  7. User Guide CD x 1

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