STM32F429 von ST-Microelectronics Implementation of the Cortex-M4 architecture from ST-Microelectronics: The STM32F429. Features of the STM32F429 Cortex-M4 from ST Typ STM32F429 Max. Takt 180 MHz Flash-ROM 2 MByte SRAM 256 + 4 kByte Interfaces USB, I²C, SPI, CAN, USART, Ethernet, …