550 MHz Cortex-M7 with 1 MB Flash — what this means for the BOM
The STM32H735ZGT6 is a 32-bit ARM Cortex-M7 MCU from STMicroelectronics running at 550 MHz, with 1 MB of Flash program memory and 564K x 8 of RAM. It is part of the STM32H7 series, designed for compute-intensive control, real-time signal processing, and human-machine interface applications that demand high throughput and deterministic response. The 550 MHz core clock gives this part headroom for floating-point or DSP-heavy loops without stalling the control loop — a common pain point on lower-speed MCUs when you add a display or Ethernet stack.
Connectivity and I/O — industrial gateway fit
This MCU includes Ethernet, USB OTG, CANbus, and serial interfaces (SPI, I²C, UART/USART, SAI, SPDIF) on-chip. Supply range is 1.62 V to 3.6 V.
Temperature grade and environment
Rated for -40°C to 85°C, this part is specified for industrial environments — factory automation, outdoor telecom cabinets, and engine-bay-adjacent electronics where the ambient can swing well beyond commercial limits. The 144-LQFP package (20x20 mm) is a standard footprint for reflow assembly and rework, and the surface-mount form factor suits automated PCB production.