216 MHz Cortex-M7 core — what it means for the BOM
The STMicroelectronics STM32F746VET6TR is a 32-bit ARM Cortex-M7 MCU from the STM32F7 series, clocked at 216 MHz. That core speed, paired with 512 KB Flash and 320 KB RAM, puts it in the performance tier for graphical user interfaces, audio processing, and real-time control loops where a Cortex-M4 would run out of headroom. The 100-LQFP package (14×14 mm) keeps the board area manageable for industrial HMI panels or communication gateways that need the Ethernet, USB OTG, and CAN interfaces this part carries.
Memory and connectivity — sizing the design
The 512 KB Flash is enough for a moderate application stack with a small RTOS, a TCP/IP stack, and a basic GUI library. The 320 KB RAM supports double-buffered frame buffers for a small TFT display or a moderate audio buffer. The peripheral set — Ethernet MAC, USB OTG HS, CAN, multiple SPI/I²C/UART, and an SPDIF-Rx interface — covers the connectivity needs of an industrial gateway, a motor-drive controller, or a building-automation controller without external PHY chips beyond the Ethernet transceiver.
Temperature grade and environment
Rated for -40 °C to 85 °C ambient, the STM32F746VET6TR operates from a 1.7 V to 3.6 V supply range.