216 MHz Cortex-M7 with 1 MB Flash — what this MCU brings to the BOM
The STM32F746NGH6E is STMicroelectronics' 32-bit ARM Cortex-M7 single-core MCU clocked at 216 MHz, backed by 1 MB of Flash and 320 KB of RAM. It carries 168 I/O lines and a peripheral set that includes Ethernet MAC, dual CAN, USB OTG, and a parallel LCD interface — making it a natural fit for industrial HMI panels, motor-drive gateways, and embedded vision front-ends that need both compute throughput and real-time connectivity. The 216-TFBGA package (13x13 mm) keeps the footprint compact but demands a four-layer PCB minimum for BGA fanout.
Active lifecycle — no LTB pressure on this BOM line
The STM32F746NGH6E carries an Active product status. That means ST is still manufacturing it, and there is no last-time-buy window or obsolescence notice to track. For a production BOM that needs this specific 216-TFBGA variant, the supply channel is stable — no urgency to qualify a drop-in replacement. The base product number is STM32F746; if a future redesign needs a different package or memory density, the STM32F7 family offers pin-compatible siblings across the TFBGA and LQFP options.
Peripheral set — Ethernet, CAN, LCD, and more
The connectivity block includes Ethernet MAC (MII/RMII), dual CAN 2.0B, USB OTG HS/FS, six SPI, four I²C, and eight UARTs. The LCD-TFT controller supports up to XGA resolution with a dedicated DMA channel, so the CPU is not stalled during frame refresh. The 24-channel 12-bit ADC and two 12-bit DACs cover analog sensing and closed-loop control. Brown-out detect and POR are built in — no external supervisor needed for basic reset integrity.