STMicroelectronics STM32F746VET6TR

Overview

STM32F746VET6TR from STMicroelectronics is a high-performance ARM Cortex-M7 microcontroller with FPU, 216 MHz max clock, 512 KB Flash, 320+16+4 KB RAM, integrated LCD-TFT controller, dual CAN, USB OTG HS/FS, and 10/100 Ethernet MAC. It serves as the main application processor in industrial HMI, medical imaging front-ends, and networked edge gateways requiring real-time graphics and deterministic connectivity.

For engineers reviewing the STM32F746VET6TR datasheet, STM32F746VET6TR pinout, STM32F746VET6TR application, or STM32F746VET6TR equivalent, key selection criteria include LQFP100 package compatibility, 216 MHz Cortex-M7 performance with ART Accelerator™, dual CAN 2.0B support, hardware IEEE 1588v2 Ethernet timing, and Chrom-ART Accelerator™ for XGA LCD rendering without CPU load.

Technical Context

The device implements a tightly coupled Arm Cortex-M7 core with 4 KB instruction and 4 KB data L1 cache plus adaptive real-time accelerator (ART) enabling zero-wait-state execution from flash. Its memory subsystem includes 320 KB SRAM (64 KB DTCM + 16 KB ITCM + 4 KB backup), flexible external memory controller (FMC) supporting SDRAM/NOR/NAND, and dual-mode Quad-SPI for code/data offload.

Peripherals are organized around three AXI/AHB/APB bus domains: high-speed domain (216 MHz) for Ethernet, USB HS, DCMI, and LTDC; mid-speed domain (108 MHz) for timers, ADCs, and communication interfaces; and low-power domain for RTC, LPTIM, and backup registers - enabling concurrent real-time, connectivity, and power-sensitive operations.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads; thermally enhanced exposed pad (EPAD) for improved heat dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F746VET6TR, the STM32F767VIT6 offers double Flash capacity with identical pinout and peripheral set - ideal for secure OTA updates requiring dual-bank storage, while the STM32H743VIT6 trades integrated graphics for higher compute density and dual-core determinism at the cost of external display interface design effort.

Availability

STM32F746VET6TR 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 traceable sourcing.

Supply support for STM32F746VET6TR 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, specializing in microcontrollers, power management, sensors, and automotive ICs with vertical manufacturing and broad industrial IP portfolio.

The STM32F7 series targets high-end embedded applications demanding real-time performance, rich graphics, and multi-protocol connectivity - designed specifically for industrial automation, medical devices, and IoT edge nodes where deterministic latency and peripheral integration are critical.

FAQ

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

The STM32F746VET6TR achieves 216 MHz maximum CPU frequency using its Arm Cortex-M7 core with FPU and ART Accelerator™. This is sustained by enabling both 4 KB instruction and 4 KB data L1 caches, which eliminate wait states during flash execution. The internal voltage regulator must be ON, and VDD must be ≥2.7 V per electrical specs to guarantee timing compliance at full speed.

Does this MCU support hardware-accelerated graphics rendering?

Yes - it integrates a full LCD-TFT controller supporting up to XGA (1024×768) resolution and the Chrom-ART Accelerator™ (DMA2D), a dedicated 2D graphics engine. This hardware block performs layer composition, image rotation, alpha blending, and color format conversion without CPU intervention, reducing GUI rendering latency by up to 70% versus software-only approaches.

Can the Ethernet MAC meet IEEE 1588v2 precision time protocol requirements?

Yes - the integrated 10/100 Ethernet MAC includes dedicated hardware timestamping registers compliant with IEEE 1588v2 Annex D, achieving sub-100 ns timestamp resolution. It supports event message detection (Sync, Delay_Req, Pdelay_Req) and hardware correction for ingress/egress delays, enabling Class C substation timing accuracy in industrial automation networks.

What are the low-power capabilities in Stop mode?

In Stop mode with regulator ON, the STM32F746VET6TR consumes as low as 80 µA (typical) while retaining SRAM content, register states, and RTC operation. It supports wake-up via EXTI lines, RTC alarm, LPTIM1 trigger, or USB activity. The low-power timer (LPTIM1) continues running independently, enabling precise periodic wake-up intervals down to 1 Hz without CPU involvement.