STMicroelectronics STM32MP157DAB1, 16 bit ARM Cortex A7, ARM Cortex M4, STM32MP157D Microcontroller, 800 MHz, 128kB ROM,

The STMicroelectronics STM32MP157A/D devices are based on the high-performance dual-core Arm Cortex-A7 32-bit RISC core operating at up to 800 MHz. It provides an external SDRAM Interface supporting external memories up to 8-Gbit density (1 Gbyte), 16 or 32-bit LPDDR2/LPDDR3 or DDR3/DDR3L up to 533 MHz.

3 DMA controllers to unload the CPU