Dual-core compute for mixed-criticality control
The STM32H745XIH3 is a 32-bit dual-core microcontroller from STMicroelectronics' STM32H7 series, pairing a 240 MHz ARM Cortex-M4 with a 480 MHz ARM Cortex-M7 on a single die. This asymmetric architecture lets you run a real-time control loop on the M4 while the M7 handles heavy signal processing or communications stack — no shared-core contention. The 2 MB Flash and 1 MB RAM give enough headroom for a combined application without external memory in many cases.
Connectivity and peripheral density
With 168 I/O and a peripheral set that includes Ethernet, dual CANbus, USB OTG, multiple SPI/I²C/UART, plus an external memory interface (EBI/EMI) and QSPI, this part can serve as the main controller on a board that aggregates sensor buses, drives a local display, and talks to a plant network. The 36-channel 16-bit ADC and dual 12-bit DAC cover analog front-end tasks without an external converter.
Package and mounting
Housed in a 265-ball TFBGA (14x14 mm), the 240+25-ball footprint demands a multi-layer PCB with via-in-pad or microvia capability for signal breakout. This is not a hand-solderable package — plan for reflow assembly and X-ray inspection.