STM32F103RBT6TR

Microcontroller Operating temperature: -40...85 °C Power supply: 2...3.6 V No. of I/Os: 51 No. of timers: 4 Bus width: 32 Bit Interfaces: SPI / I²C / USART / USB / CAN Package: LQFP-64 ADC resolution: 12 bit Flash memory: 128 KB RAM: 20 KB SRAM: 20 KB