Specifications:

• Microcontroller: STM32F103C8T6
• Core: ARM Cortex-M3 32-bit CPU
• Operating Frequency: 72MHz
• Flash Memory: 64KB
• SRAM: 20KB
• Power Supply: 2.0V – 3.6V
• Debugging Interface: SWD (Serial Wire Debug)
• Clock: 4-16MHz crystal
• Dimensions: 54mm × 22mm
• Weight: 9g