216 MHz Cortex-M7 with 2 MB Flash — what the memory and speed mean for the BOM
The STM32F777IIK6: The 176+25 UFBGA package (10x10 mm) packs 132 I/Os and a full connectivity set: dual CAN, Ethernet MAC, USB OTG, QSPI, SAI, and SPDIF. This is the part you pick when the design needs a single-chip compute core with rich interfaces and the board area is tight.
The 2 MB Flash is organized as 2M x 8. The 512 KB SRAM supports large frame buffers.
176+25 UFBGA — footprint and rework considerations
The 176+25 UFBGA (10x10 mm) is a fine-pitch BGA.
Connectivity set — Ethernet, CAN, USB OTG, and more
This MCU integrates an Ethernet MAC, dual CAN interfaces, USB OTG (host/device), QSPI for external Flash, SAI for audio, and SPDIF for digital audio input. The EBI/EMI interface can drive external SRAM, NOR Flash, or a parallel LCD panel. For an industrial gateway or HMI controller, this peripheral set eliminates the need for external bridge chips, saving BOM cost and board space.
Temperature range and supply voltage
The internal POR and brown-out detect peripherals handle startup sequencing and supply monitoring without an external supervisor.
For dual-sourcing resilience, the STM32F777ZIT6 is a pin-compatible alternative in a 144-LQFP package with 114 I/Os, sharing the same 216 MHz Cortex-M7 core and peripheral set.