The STM32F070CB/RB/C6/F6 microcontrollers incorporate the high-performance ARM Cortex-M0 32-bit RISC core operating at a 48 MHz frequency, high-speed embedded memories (up to 128 Kbytes of Flash memory and up to 16 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (up to two I2Cs, up to two SPIs and up to four USARTs), one USB Full speed device, one 12-bit ADC, seven general-purpose 16-bit timers and an advanced-control PWM timer.

Specifications: 

1. Operating Voltage: 2.4 to 3.6V
2. Operating Temperature: -40 to +85 C
3. Frequency: 48 MHz
4. 32 to 128 Kbytes of Flash memor
5. Crystal oscillator: 4 to 32 MHz
6. Interface: I2C, SPI, USART, USB

Note:

1. For more technical details, go through the datasheet in the attachments
2. Image may vary from actual product in terms of brand and value printed