The STM32F070RB from STMicroelectronics is a Space Qualified Microcontroller with Clock Rate 32 kHz to 32 MHz, Operating Frequency 48 MHz, Internal RAM Memory SRAM : 16 kB, Flash Memory 128 kB, Supply Voltage 2.4 to 3.6 V. Tags: Surface Mount. More details for STM32F070RB can be seen below.