2 MB Flash / 1 MB RAM — sizing the firmware budget
The STM32H743AII6TR: The 2 MB Flash (2M x 8) and 1 MB RAM (1M x 8) define the firmware and data buffer ceiling. The 480 MHz core can saturate the internal memory bandwidth, so cache and prefetch configuration matters for sustained throughput.
Connectivity — Ethernet confirmed, plus the full STM32H7 peripheral set
Ethernet MAC is present on this variant, along with CANbus, USB OTG, dual SPI/QSPI, I²C, SAI, SPDIF, and SDIO. For a buyer cross-checking the BOM against a design that requires Ethernet, this part carries it — no external MAC needed.
Package and temperature — 169-UFBGA, industrial range
Housed in a 169-UFBGA (7x7 mm) package, this is a fine-pitch BGA that requires a multi-layer PCB with microvia capability and controlled impedance for the high-speed interfaces. Supply range of 1.62V to 3.6V allows operation from a single Li-ion cell or a regulated 3.3V rail with brownout margin.
