180 MHz Cortex-M4 with 2 MB Flash — the compute and memory budget
The STM32F437IIH6: ARM Cortex-M4 core at 180 MHz with 2 MB Flash and 256K x 8 SRAM.
Ethernet, CAN, and USB OTG — one-chip connectivity stack
This MCU integrates Ethernet MAC, CANbus, and USB OTG alongside I2C, SPI, UART/USART, and IrDA interfaces. For a BOM-conscious design, that means a single STM32F437IIH6 can handle the control, display, and wired-communication functions that would otherwise require separate PHY or bridge chips. The 140 I/O count provides headroom for parallel sensor arrays, addressable LED strips, or parallel-memory buses via the EBI/EMI controller.
176+25 UFBGA — footprint planning for the 10x10 mm BGA
The exposed center pad (thermal ball) needs a via-stitched copper island on the top layer to pull heat into the inner planes; without it, junction temperature rises quickly above 400 mA continuous draw.
The base product number STM32F437 covers a range of density and package variants; if a future redesign needs a different footprint, the STM32F4 family keeps the same core and peripheral architecture.