- Model: Open103C-B<br />- Color: Blue<br />- Material: FR4 fiberglass<br />- 1. STM32F103CBT6: the high performance STM32 MCU which features<br />- Core: ARM Cortex-M3 32-bit RISC<br />- Operating Frequency: 72MHz、 1.25 DMIPS/MHz<br />- Operating Voltage: 2-3.6V<br />- Package: LQFP48<br />- I/Os: 37<br />- Memories: 128kB Flash、 20kB RAM<br />- Communication Interfaces: 2 x SPI、 3 x USART、 2 x I2C、 1 x USB、 1 x CAN<br />- AD & DA converters: 2 x AD (12-bit、 1|━s、 shares 10 channels)<br />- Debugging/Programming: supports JTAG/SWD (serial wire debug) interfaces、 supports IAP<br />- 2. AMS1117-3.3: 3.3V voltage regulator<br />- 3. Power supply switch: 5V DC or USB<br />- 4. Power indicator<br />- 5. LEDs: for indicating I/O status or program debugging running state<br />- 6. Reset button<br />- 7. User key: for I/O input test<br />- 8. Joystick: for I/O input test (five positions)<br />- 9. 32.768K crystal oscillator: used for internal RTC、 also supports clock calibration<br />- 10. 8M crystal oscillator: enables the MCU run at 72M frequency by frequency multiplication<br />- 11. 8 I/O Interface: easily connects to keypad、 motor、 etc.<br />- 12. CAN interface: communicates with accessory board which features the CAN device conveniently<br />- 13. SPI1 / SPI2 interface<br />- easily connects to SPI peripherals such as FLASH (AT45DBxx)、 SD card、 MP3、 etc.<br />- convenient for connecting AD module、 thanks to the SPI1 alternative AD function<br />- 14. I2C1 / I2C2 interface: easily connects to I2C peripherals such as I/O expander (PCF8574)、 EEPROM (AT24Cxx)、  <br />etc.<br />- 15. LCD interface: easily connects to the touch screen LCD<br />- 16. ONE-WIRE interface: easily connects to ONE-WIRE devices (TO-92 package)、 such as temperature sensor (DS18B20)、  <br />electronic registration number (DS2401)、 etc.<br />- 17. USART1 interface: easily connects to RS232、 RS485、 USB TO 232<br />- 18. USART2 interface: easily connects to RS232、 RS485、 USB TO 232<br />- 19. USB port: USB communication between board and PC<br />- 20. 5V DC jack<br />- 21. 5V/3.3 V power input/output、 usually used for power output、 or common ground with other user board<br />- 22. MCU pins connector: all the MCU pins are accessible on expansion connectors for further expansion<br />- 23. JTAG/SWD interface: for debugging/programming<br />- 24. Boot mode selection: for configuring the BOOT0 and BOOT1 pins<br />- 25. USB enable jumper<br />- short the jumper to enable the PC auto detection while USB connecting<br />- open the jumper to disable<br />- 26. LEDs jumper<br />- short the jumper to connect the LEDs to I/Os that used in example code<br />- open the jumper to connect the LEDs to other custom pins via jumper wires<br />- 27. User key jumper<br />- short the jumper to connect the user key to I/Os that used in example code<br />- open the jumper to connect the user key to other custom pins via jumper wires<br />- 28. Joystick jumper<br />- short the jumper to connect the joystick to I/Os that used in example code<br />- open the jumper to connect the joystick to other custom pins via jumper wires<br />- 29. VBAT selection jumper<br />- short the jumper to use system power supply<br />- open the jumper to connect the VBAT to external power、 such as battery<br />- Packing list:<br />- 1 x Open 103C development board<br />- 1 x PL2302 USB UART board (mini)<br />- 1 x USB cable<br />- 2 x 4 pin cables<br />- 2 x 2 pin cables<br />- 1 x 5V battery adapter<br />- 1 x 2.2" 320 x 240 touch LCD<br />- 1 x Analog test board<br />- 1 x SN65HVD230 CAN board<br />- 1 x ENC28J60 Ethernet board (SPI)<br />- 1 x AT24CXX EEPROM board (I2C)<br />- 1 x Micro SD storage board (SDIO / SPI)<br />- 1 x AT45DBXX DataFlash board (SPI)<br />- 1 x VS1003B MP3 board<br />- 1 x Ethernet cable (150cm)<br />- 1 x CD<br /><br />                                                                                                                                Dimensions: 3.94 in x 2.91 in x 0.47 in (10.0 cm x 7.4 cm x 1.2 cm)<br />Weight: 1.87 oz (53 g)<br /><br />