The STM32F334Cx 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 16 to 64 KB, Supply Voltage 2 to 3.6 V. Tags: Surface Mount. More details for STM32F334Cx can be seen below.