216 MHz Cortex-M7 — what it buys you on the bus
The STM32F722RCT6 runs an ARM Cortex-M7 core at 216 MHz with single-precision FPU and DSP instructions. The 50 I/O in a 64-LQFP package gives you enough GPIO for a sensor array or parallel display interface without forcing a larger footprint.
Connectivity and peripherals for industrial gateways
This MCU carries CANbus, QSPI for external Flash or RAM expansion, SAI for audio codec interface, and a full-speed USB OTG. The QSPI is the key differentiator here — it lets you memory-map a serial NOR Flash for execute-in-place code or data logging without chewing up GPIO. The SAI and I²S blocks make it a natural fit for a speech-processing or audio-effects node. The internal oscillator saves a crystal on the BOM for non-critical timing, though a precision application will still want an external clock source.