STMicroelectronics STM32F746VET6

Overview

STM32F746VET6 from STMicroelectronics is a high-performance ARM® Cortex®-M7 32-bit microcontroller with FPU, delivering 462 DMIPS at 216 MHz, featuring 512 KB flash, 320+16+4 KB RAM, dual USB OTG (FS/HS), 10/100 Ethernet MAC, LCD-TFT controller, and Chrom-ART Accelerator™. It targets embedded HMI, industrial control, and connected edge devices requiring real-time graphics and multi-interface connectivity.

For engineers reviewing the STM32F746VET6 datasheet, STM32F746VET6 pinout, STM32F746VET6 application, or STM32F746VET6 equivalent, key selection criteria include its LQFP100 package, 216 MHz Cortex-M7 core with L1 cache, integrated Ethernet + USB HS/FS + LCD-TFT + DCMI, and support for deterministic real-time execution via ART Accelerator™ and TCM RAM.

Technical Context

The STM32F746VET6 implements a dual-bank Arm Cortex-M7 core with tightly coupled memory (64 KB DTCM + 16 KB ITCM), adaptive real-time accelerator (ART) enabling zero-wait-state execution from flash, and MPU for memory protection. Its AXI/AHB bus matrix supports concurrent high-bandwidth peripherals including Ethernet DMA, USB HS DMA, and LCD-TFT controller.

It integrates dual-mode Quad-SPI, HDMI-CEC, SPDIFRX, two CAN 2.0B controllers, SDMMC, and dual SAI audio interfaces - all synchronized via multiple PLLs (main PLL, PLLI2S, PLLSAI) with independent clock domains for precise timing isolation between graphics, audio, and communication subsystems.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 pins, 168 I/O capability (164 fast I/Os up to 108 MHz, 166 5 V-tolerant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F746VET6, the STM32H743VIT6 offers higher compute throughput but removes integrated LCD-TFT support, while the STM32F767VIT6 retains full peripheral compatibility and adds hardware crypto - making it ideal for security-critical deployments without changing PCB layout or driver stack.

Availability

STM32F746VET6 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging gateways, smart building controllers, and automotive diagnostic tools requiring stable component supply across long-lifecycle programs.

Supply support for STM32F746VET6 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F7 series targets high-end embedded applications demanding real-time performance, rich connectivity, and graphical user interfaces - optimized for deterministic execution, peripheral concurrency, and seamless integration of display, camera, and network subsystems.

FAQ

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

The STM32F746VET6 achieves 216 MHz via its Arm Cortex-M7 core with ART Accelerator™ and L1 cache (4 KB instruction + 4 KB data). This configuration eliminates flash wait states and enables sustained 462 DMIPS performance. The system clock derives from the main PLL, which accepts input from HSE (4–26 MHz) or HSI (16 MHz), and supports dynamic voltage scaling for power optimization.

Does STM32F746VET6 support external SDRAM, and what interface is used?

Yes, it supports external SDRAM up to 32-bit data width using the Flexible Memory Controller (FMC). The FMC provides dedicated control signals (RAS/CAS, CLK, DQM) and supports LPDDR/SDR/DDR1 protocols. Configuration requires proper timing setup in the FMC registers and external 256 MB SDRAM chips like IS42S16400J, commonly used for LCD frame buffers or application heap expansion.

How does the LCD-TFT controller interface with displays, and what resolutions are supported?

The integrated LCD-TFT controller supports parallel RGB interfaces (8080/6800 modes) and drives displays up to XGA resolution (1024×768) at 60 Hz. It includes programmable timing generators, layer composition (up to 3 layers), and Alpha blending. Pixel clock generation is handled internally, and the Chrom-ART Accelerator™ accelerates bitmap operations - eliminating need for external display controllers in cost-sensitive HMI designs.

Can STM32F746VET6 operate in low-power modes while maintaining Ethernet or USB functionality?

No - Ethernet MAC and USB OTG require active clocks and regulators, so they are disabled in Stop and Standby modes. However, the MCU supports Sleep mode with peripherals clocked, allowing USB FS and Ethernet to remain operational at reduced CPU frequency (e.g., 24 MHz). For wake-on-LAN or USB resume, the device must be in Sleep mode with appropriate clocks enabled and interrupt routing configured.