STMicroelectronics STM32F746ZGY6TR

Overview

STM32F746ZGY6TR from STMicroelectronics is a high-performance ARM Cortex-M7 32-bit microcontroller with FPU, delivering 462 DMIPS at 216 MHz. It integrates 1 MB Flash, 320 KB SRAM (including 64 KB data TCM and 16 KB instruction TCM), dual USB OTG (FS/HS), 10/100 Ethernet MAC, LCD-TFT controller up to XGA, and Chrom-ART Accelerator™ for graphics acceleration - deployed in industrial HMI and embedded vision gateways.

For engineers reviewing the STM32F746ZGY6TR datasheet, STM32F746ZGY6TR pinout, STM32F746ZGY6TR application, or STM32F746ZGY6TR equivalent, key selection criteria include TCM RAM allocation for real-time control loops, dual CAN 2.0B support for automotive diagnostics, IEEE 1588v2 hardware timestamping in Ethernet, and parallel camera interface (DCMI) timing compliance at 54 MB/s.

Technical Context

The device implements an adaptive real-time accelerator (ART Accelerator™) with 4 KB instruction and 4 KB data L1 caches, enabling zero-wait-state execution from Flash and external memories. Its AXI-AHB bus matrix supports concurrent access by CPU, DMA2D, and peripherals - critical for simultaneous LCD rendering, Ethernet packet processing, and sensor data acquisition.

It features dual-mode Quad-SPI for XIP and memory-mapped code execution, flexible external memory controller (FMC) supporting SDRAM/NOR/NAND, and dual SAI interfaces with internal audio PLL for synchronized multi-channel audio I/O - all operating under deterministic timing constraints enforced by the MPU and NVIC priority grouping.

Key Specifications

Pinout & Package

STM32F746ZGY6TR is housed in a 144-pin LQFP package (20 × 20 mm, 0.5 mm pitch), with 114 user I/Os (108 MHz max speed, 166 5 V-tolerant). Pin functions are validated per ST's DS10916 Rev 5 Table 10 (pages 55–74).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F746ZGY6TR, STM32H743VIT6 offers higher compute throughput but sacrifices DCMI and integrated Ethernet, while STM32F767ZIT6 extends Flash and adds cryptographic engines at the cost of Ethernet MAC - making the ZGY6TR optimal for cost-sensitive, camera+Ethernet edge nodes requiring balanced performance and peripheral integration.

Availability

STM32F746ZGY6TR is available at Aetrix Electronics and suitable for industrial HMI, embedded vision gateways, medical imaging terminals, and automotive diagnostic tools requiring stable component supply across extended product lifecycles.

Supply support for STM32F746ZGY6TR 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 analog devices for industrial, automotive, and consumer markets.

The STM32F7 series targets high-end embedded applications demanding real-time performance, rich connectivity, and advanced graphics - specifically engineered for human-machine interfaces, industrial automation, and intelligent edge devices with integrated vision/audio capabilities.

FAQ

What is the maximum operating temperature range for STM32F746ZGY6TR?

The STM32F746ZGY6TR is rated for industrial temperature range: –40 °C to +85 °C ambient. This is confirmed in Section 6.3.1 of DS10916 Rev 5, with thermal derating applied above 70 °C for sustained 216 MHz operation. The device includes on-die temperature sensor (±1.5 °C accuracy) for real-time thermal monitoring in fanless enclosures.

Does STM32F746ZGY6TR support external SDRAM, and what is the maximum clock rate?

Yes, it supports external SDRAM via the Flexible Memory Controller (FMC) with up to 32-bit data bus width. Per Section 6.3.27, the maximum SDRAM clock is 100 MHz (200 MT/s effective), compatible with standard LPDDR2 and DDR2 components. Address/data multiplexing and auto-refresh control are fully hardware-managed with DMA-triggered refresh.

How many independent CAN interfaces does STM32F746ZGY6TR provide, and are they CAN FD capable?

It provides two independent bxCAN 2.0B controllers, both supporting classic CAN only (not CAN FD). Each has dedicated message RAM, programmable bit timing (up to 1 Mbps), and hardware filtering. CAN FD capability was introduced in later STM32H7 and STM32G4 families - this part is strictly ISO 11898-1 compliant.

Is the LCD-TFT controller capable of driving RGB888 panels at 60 Hz with XGA resolution?

Yes, the LTDC controller supports RGB888 (24-bit) output at up to 65 MHz pixel clock, sufficient for 1024×768 @ 60 Hz (50.5 MHz required). Section 6.3.30 specifies timing parameters including horizontal/vertical porch, sync pulse width, and active region alignment - verified with ST's AN4861 reference design using ILI9488-compatible panels.