The STM32 WBA52CEU from STMicroelectronics is a Space Qualified Microcontroller with Clock Rate 32 kHz to 32 MHz, Operating Frequency 100 MHz, Internal RAM Memory SRAM : 32 to 64 kB, Flash Memory 512 KB, Supply Voltage 1.71 to 3.6 V. Tags: Surface Mount. More details for STM32 WBA52CEU can be seen below.