The STM32F328C8 from STMicroelectronics is a Space Qualified Microcontroller with Clock Rate 32 kHz to 32 MHz, Operating Frequency 72 MHz, Internal RAM Memory SRAM : 12 kB, Flash Memory 64 KB, Supply Voltage 1.65 to 3.6 V. Tags: Surface Mount. More details for STM32F328C8 can be seen below.