- STM32 F103RB: a 32-bit ARM Cortex M3 microprocessor
- Clock Speed: 72 MHz
- Operating Voltage: 3.3V
- Input Voltage (recommended): 3.0V-12V
- 39 Digital I/O Pins (GPIO)
- 16 Analog Input Pins
- 12-bit ADC resolution (ADC)
- 15 PWM pins at 16-bit resolution (PWM)
- Dedicated USB port for programming and communications (USB)
- External JTAG interface (USB)
- 128 Flash and 20KB SRAM
- 64 Channel nested vector interrupt handler (including external interrupt on GPIO’s)
- Integrated SPI (SPI)
- Integrated I2C (I2C)
- 7 Channels of Direct Memory Access (DMA)
- 3 USART divices (USART)
- Four 4-channel Timers (Timers)
- Supplies up to 800mA @ 3.3v
- Support for low power and sleep modes (<500uA)