The STM32L100R8/BxxA from STMicroelectronics is a Space Qualified Microcontroller with Clock Rate 32 kHz to 24 MHz, Operating Frequency 32 MHz, Internal RAM Memory 8 to 10 kB, Flash Memory 64 to 128 kB, Internal ROM Memory 2 kB. Tags: Surface Mount. More details for STM32L100R8/BxxA can be seen below.