STM32F103CBT7

Microcontroller Operating temperature: -40...85 °C Power supply: 2...3.6 V No. of I/Os: 37 No. of timers: 4 Bus width: 32 Bit Interfaces: SPI / I²C / USART / USB / CAN Package: LQFP-48 ADC resolution: 12 bit Flash memory: 128 KB RAM: 20 KB SRAM: 20 KB