Features: Includes STMicroelectronics' most advanced patented technologies. 32-bit Arm Cortex-M7 core with double-precision floating-point unit and L1 cache: 16KB data cache and 16KB instruction cache; frequency up to 480MHz, with memory protection unit, 1027 DMIPS/2.14 DMIPS/MHz (Dhrystone 2.1), and DSP instructions. 128KB flash memory. 1MB RAM: 192KB TCM RAM (including 64KB ITCM RAM + 128KB DTCM RAM for time-critical programs), 864KB user SRAM, and 4KB backup domain SRAM. Dual-mode Quad-SPI memory interface, operating frequency up to 133MHz. Flexible external memory controller with up to 32-bit data bus: SRAM, PSRAM, and NOR flash clock frequency up to 133MHz in synchronous mode; supports SDRAM/LPSDR SDRAM; supports 8/16-bit NAND flash; features a CRC calculation unit. Supports ROP, PC-ROP, active tamper protection, secure firmware upgrade, and secure access mode. Up to 168 I/O ports with interrupt capability.