The STM32H745XI from STMicroelectronics is a Space Qualified Microcontroller with Clock Rate 32 kHz to 64 MHz, Operating Frequency 300 / 400 / 480 MHz, Internal RAM Memory SRAM : 4 to 512 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 STM32H745XI can be seen below.