Overview

Open103V is a STM32 development board that features a STM32F103VET6 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

1. STM32F103VET6:the high performance STM32 MCU in LQFP100 package which features
   • Core: ARM Cortex-M3 32-bit RISC;
   • Operating Frequency: 72MHz, 1.25 DMIPS/MHz;
   • I/Os: 80;
   • Operating Voltage: 2-3.6V;
   • Memories: 512K Flash, 64K RAM (the highest specification in STM32F103V series);
   • Communication Interfaces: 3xSPI, 5xUSART, 2xI2S, 2xI2C, 1xFSMC, 1xLCD, 1xSDIO, 1xUSB, 1xCAN;
   • AD & DA converters: 3xAD(12bit, 1μs, shares 16 channels); 2xDA(12bit);
   • Debugging/Programming: supports JTAG/SWD (serial wire debug) interfaces, supports IAP;
2. 74LVC139: for FSMC expansion, makes it possible to connect multi peripherals through FSMC at the same time, such as connecting a LCD and a NAND FLASH;
3. AMS1117-3.3: 3.3V voltage regulator;
4. Power supply switch: 5V DC or USB;
5. Power indicator;
6. LEDs: Convenient for indicating I/O status or program debugging running state;
7. Reset button;
8. User key;
9. Joystick: Convenient for I/O input (five positions);
10. 32.768K crystal oscillator: used for internal RTC;
11. 8M crystal oscillator: enables the MCU run at 72M frequency by frequency multiplication;
12. SDIO Interface: connects to the Micro SD Board easily, It is much faster to read/write the Micro SD card via SDIO than via SPI;
13. 8 I/O Interface: easily connects to keypad, motor, etc.;
14. CAN Interface: communicates with accessory board which features the CAN device conveniently;
15. SPI Interface: easily connects to SPI peripherals such as FLASH (AT45DBxx), SD card, MP3, etc.;
16. I2C Interface: easily connects to I2C peripherals such as I/O expander(PCF8574), EEPROM (AT24Cxx), etc.;
17. NAND FLASH Interface: easily connects to the NAND FLASH peripherals;
18. LCD Interface: easily connects to the touch screen LCD;
19. ONE-WIRE Interface: easily connects to ONE-WIRE devices (TO-92 package), such as temperature sensor (DS18B20), electronic registration number (DS2401), etc.
20. PS/2 Interface: easily connects to PS/2 keyboard or mouse;
21. USART1 Interface: easily connects to RS232, RS485, USB TO 232;
22. USART2 Interface: easily connects to RS232, RS485, USB TO 232;
23. USB Port: USB communication between board and PC;
24. 5V DC jack;
25. 5V/3.3 V power input/output;
26. MCU pins connector: all the MCU pins are accessible on expansion connectors for further expansion;
27. JTAG/SWD interface: for debugging/programming;
28. Boot Mode Selection: for configuring the BOOT0 and BOOT1 pins;
29. USB Enable Jumper
    • Short the jumper to enable the PC auto detection while USB connecting;
    • Open the jumper to disable;
30. PS/2 Interface Jumper
    • Short the jumper to connect the PS/2 device to default I/Os;
    • Open the jumper to connect the PS/2 device to custom I/Os via DuPont wires;
31. LEDs Jumper
    • Short the jumper to connect the LEDs to default I/Os;
    • Open the jumper to connect the LEDs to custom I/Os via DuPont wires;
32. VBAT Selection Jumper
    • Short the jumper to use system power supply;
    • Open the jumper to connect the VBAT to external power, such as battery;

Photos

Note:
The Open103V supports programming via STM32 USART bootloader, a USB TO UART accessory board is also provided in the package.
The Open103V does NOT integrate any debugging function, a debugger is required.

JTAG/SWD Interfaces

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

Development Resources

• Related softwares (KEIL etc.)
• Demo Code (examples in C, μC/OS-II)
• Schematic (PDF)
• STM32 Development documents (Datasheet etc.)

Wiki: www.waveshare.com/wiki/Open103V