Some of the features STM32F103CB

• ARM Cortex-M3 core running at 72MHz

• 128K system programmable flash memory

• 20KB RAM

• 2 × 12 bits 1 microsecond A / D

  1. converter (up to 16 channels)

  2. Conversion range: 0~3.6 V

  3. Dual sample and hold function

• DMA

  1. 7-channel DMA controller

  2. Supported peripherals: timers, ADC, SPI's, I2C and USART

• 18 general-purpose programmable GPIO

• 7 Timer

  1. 3 16-bit timers, each up to 4 IC / OC / PWM or pulse counter quadrature (incremental) encoder into

  2. 16-bit motor control PWM timer, dead-time generation and emergency stop

  3. 2 watchdog timers (Independent and windows)

  4. System Timer: 24 downcounter

• 1 I2C interface (SMBus / PMBus)

• 3 USART (ISO7816 interface, LIN, infrared capabilities, modem control)

• 1 SPI interface (18 Mbit / s)

• 1 CAN interface (2.0B Active)

• 1 full-speed USB 2.0 interface