The STM32H742AI from STMicroelectronics is a Space Qualified Microcontroller with Clock Rate 32 kHz to 64 MHz, Operating Frequency 400 MHz / 480 MHz, Internal RAM Memory SRAM : 4 to 384 kB, TCM RAM : 64 to 128 kB, Flash Memory 2 MB, Supply Voltage 1.62 to 3.6 V. Tags: Surface Mount. More details for STM32H742AI can be seen below.