Overview

Core103R is an STM32 MCU core board designed for STM32F103RCT6, supports further expansion. It is ideal for starting application development with STM32F family.

• Minimal ready-to-run system, integrates clock circuit, USB control circuit, USB connector, etc.
• All the I/O ports are accessible on the pin headers
• JTAG/SWD programming/debugging interface
• 2.54mm header pitch, allowed to be plugged-in your application board

What's On Board

1. STM32F103RCT6:the high performance STM32 MCU which features:
   • Core: Cortex-M3 32-bit RISC
   • Operating Frequency: 72MHz, 1.25 DMIPS/MHz
   • Operating Voltage: 2-3.6V
   • Package: LQFP64
   • Memories: 256kB Flash, 48kB SRAM
   • MCU communication Interfaces:
     • 3xSPI, 5xUSART, 2xI2S, 2xI2C, 1xSDIO, 1xUSB, 1xCAN
   • AD & DA converters: 3 x AD (12-bit, shares 16 channels); 2 x DA (12-bit)
   • Debugging/Programming: supports JTAG/SWD (serial wire debug) interfaces, supports IAP
2. AMS1117-3.3: 3.3V voltage regulator
3. Power supply switch, powered from 5Vin or USB connection
4. Boot mode selection, for configuring BOOT0 pin
5. Power indicator
6. VBUS LED
7. Reset button
8. 8M crystal
9. 32.768K crystal, for internal RTC with calibration
10. JTAG/SWD interface: for debugging/programming
11. USB connector, used for establishing USB communication between PC and the STM32 development board
12. MCU pins expander, VCC, GND and all the I/O pins are accessible on expansion connectors for further expansion
13. 5Vin pinheader, 5V power supply input
14. USB enable jumper
    • short the jumper to enable USB function
    • open the jumper to disconnect from related I/O port
15. 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:
Mother board or programmer/debugger in the photo is NOT included in the price.
Core103R provides JTAG/SWD debugging interface, yet does NOT integrate any debugging function, a debugger is required.

JTAG/SWD Interfaces

The figure 1, figure 2 shows the header pinout of JTAG, SWD interface respectively

Figure 1. JTAG Header Pinout

Figure 2. SWD Header Pinout

Development Resources

• Related software (KEIL etc.)
• Examples in C
• Schematic (PDF)
• Development documentations

Wiki: www.utsource.net/wiki/Core103R

Dimensions