The STM32WB55Vx from STMicroelectronics is a Space Qualified Microcontroller with Clock Rate 32 kHz to 32 MHz, Operating Frequency 16 MHz, Internal RAM Memory SRAM : 64 to 512 kB, Flash Memory 256 KB to 1 MB, Supply Voltage 1.71 to 3.6 V. Tags: Surface Mount. More details for STM32WB55Vx can be seen below.