STMicroelectronics STM32F746BGT7

Overview

STM32F746BGT7 from STMicroelectronics is a high-performance ARM® Cortex®-M7 32-bit microcontroller with FPU, delivering 462 DMIPS at 216 MHz, featuring 1 MB Flash, 320 KB + 16 KB + 4 KB SRAM, USB OTG HS/FS, 10/100 Ethernet MAC, LCD-TFT controller, and dual CAN 2.0B interfaces - deployed in industrial HMI, medical imaging front-ends, and networked edge gateways.

For engineers reviewing the STM32F746BGT7 datasheet, STM32F746BGT7 pinout, STM32F746BGT7 application, or STM32F746BGT7 equivalent, key selection criteria include real-time performance (216 MHz + L1 cache), integrated connectivity (Ethernet + dual CAN + USB HS/FS), graphics acceleration (Chrom-ART DMA2D), and low-power operation across Sleep/Stop/Standby modes with VBAT-backed RTC and backup SRAM.

Technical Context

The device implements an Arm Cortex-M7 core with adaptive real-time accelerator (ART Accelerator™), 4 KB instruction and 4 KB data caches enabling zero-wait-state execution from flash or external memory. It integrates dual-mode Quad-SPI, parallel LCD-TFT controller supporting XGA resolution, and Chrom-ART Accelerator™ for hardware-accelerated 2D graphics composition via DMA2D.

Its clock system includes four PLLs (main PLL, audio PLLs PLLI2S/PLLSAI, and Ethernet PLL), supporting independent domain clocking for USB HS (480 MHz), Ethernet (50 MHz), audio (192 MHz), and LCD (up to 54 MHz). The flexible memory controller (FMC) supports SDRAM, NOR/NAND, PSRAM, and SRAM with up to 32-bit data bus width.

Key Specifications

Pinout & Package

STM32F746BGT7 uses a TFBGA100 package (8 × 8 mm, 0.8 mm ball pitch) with 100 I/O balls arranged in 10 × 10 grid. Ball mapping follows ST's standardized pinout for STM32F746xx series, including dedicated VCAP1/VCAP2 decoupling pins, dual VDD/VSS power domains, and function-multiplexed AFIOs supporting all major peripherals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance MCU applications.

Compared with STM32F746BGT7, STM32H743VIT6 offers higher compute throughput and dual-core flexibility but increases design complexity and cost, while STM32F429ZIT6 reduces capability and connectivity-making the F746BGT7 optimal for balanced high-performance, integrated Ethernet, and graphics in compact TFBGA100 form factor.

Availability

STM32F746BGT7 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging front-ends, and smart energy gateways requiring stable component supply, long-term lifecycle assurance, and full traceability from wafer to shipment.

Supply support for STM32F746BGT7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components since 1987.

The STM32F7 series targets high-end embedded applications demanding real-time responsiveness, rich connectivity, and advanced graphics - specifically engineered for industrial control, medical devices, and IoT edge nodes where performance-per-milliwatt and peripheral integration are critical.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F746BGT7 achieves 216 MHz maximum CPU frequency using its Arm Cortex-M7 core with ART Accelerator™ and enabled L1 instruction/data caches. This configuration eliminates wait states during flash execution and ensures deterministic timing for real-time tasks. External clock sources (4–26 MHz crystal or internal 16 MHz RC) feed the main PLL, which generates the 216 MHz system clock with jitter <±50 ppm under specified voltage/temperature conditions.

Does STM32F746BGT7 support hardware-accelerated graphics rendering?

Yes - it integrates the Chrom-ART Accelerator™ (DMA2D), a dedicated 2D graphics engine that performs alpha blending, color format conversion (e.g., RGB565 ↔ ARGB8888), and layer composition without CPU intervention. It directly interfaces with the LCD-TFT controller and SRAM, enabling smooth UI transitions and video overlays at full XGA resolution with minimal CPU load.

What Ethernet PHY options are supported?

The STM32F746BGT7 includes a fully integrated 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping but no on-chip PHY. It supports both MII and RMII physical layer interfaces, allowing direct connection to external PHYs such as the LAN8742A (RMII) or DP83848 (MII). ULPI is not supported for Ethernet; that interface is reserved for USB HS.

How does the power management system handle low-power modes?

The device supports Sleep, Stop, and Standby modes with hierarchical power gating. In Stop mode (regulator ON), current drops to ~120 µA while retaining SRAM and register content; VBAT powers RTC and 4 KB backup SRAM in Standby mode (<2 µA). Critical peripherals like LPTIM1 and RTC remain active, and wake-up can occur via EXTI lines, RTC alarm, or USB activity - all verified per datasheet Section 3.20 and Table 32.