216 MHz Cortex-M7 with 1 MB Flash — what it means for the control loop
The STM32F745IGK6TR is a 32-bit ARM Cortex-M7 single-core MCU from STMicroelectronics, clocked at 216 MHz with 1 MB of Flash and 320 KB of SRAM. That core speed puts it in the high-performance tier of the STM32F7 family — enough headroom for a single-chip motor-control loop with EtherCAT or a real-time Ethernet stack, without offloading to an external FPGA. The 140 GPIOs and the peripheral set (Ethernet, USB OTG, CANbus, SPI, I²C, SAI, SDIO) mean this part can serve as the system controller in a multi-axis drive cabinet or a protocol gateway aggregating fieldbus segments.
Memory and connectivity — sizing the BOM for a gateway or drive controller
1 MB of program Flash and 320 KB of SRAM are enough for a FreeRTOS or bare-metal application running a TCP/IP stack, a CANopen master, and a Modbus TCP slave concurrently. The 320 KB SRAM is split across the TCM and AXI buses; the Cortex-M7's cache and TCM architecture means careful linker-script placement matters for deterministic interrupt latency. The Ethernet MAC with dedicated DMA and the dual CAN 2.0B interfaces are the main draw for industrial-control BOMs — they eliminate the need for an external Ethernet controller or CAN transceiver bridge.
Lifecycle and sourcing — EOL hot, plan the last-time buy
The lifecycle stage for the STM32F745IGK6TR is recorded as EOL hot — meaning the manufacturer has announced end-of-life and the last-time-buy window is active or imminent. For a BOM line that depends on this exact package and pinout, the procurement action is to secure final-order quantities now. The base product number STM32F745 covers a range of density and package variants; a pin-compatible migration path within the STM32F7 series in the same 176+25 UFBGA footprint should be evaluated for long-term production. This part is sourced and quoted to order through independent distribution; availability and current pricing are confirmed at quote time.