STMicroelectronics STM32F746ZGT7

Overview

STM32F746ZGT7 from STMicroelectronics is a high-performance ARM Cortex-M7 microcontroller with FPU, delivering 462 DMIPS at 216 MHz. It integrates 1 MB Flash, 320 KB + 16 KB + 4 KB SRAM (including TCM and backup), dual CAN 2.0B, USB OTG HS/FS, 10/100 Ethernet MAC, LCD-TFT controller up to XGA, and Chrom-ART Accelerator™ for graphics acceleration - deployed in industrial HMI, medical imaging front-ends, and connected gateway controllers.

For engineers reviewing the STM32F746ZGT7 datasheet, STM32F746ZGT7 pinout, STM32F746ZGT7 application, or STM32F746ZGT7 equivalent, key selection criteria include its dual-bank Flash for seamless firmware updates, hardware IEEE 1588v2 support for time-sensitive networking, 24-channel 12-bit ADC with 7.2 MSPS triple interleaved mode, and 168 I/Os with 5 V tolerance - critical for mixed-signal industrial control and real-time multimedia systems.

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 high-bandwidth access between CPU, DMA2D, Ethernet MAC, and FMC.

Clock architecture includes dual PLLs (main PLL, audio PLL, and SAI PLL), dedicated RTC oscillator with calibration, and internal 16 MHz RC (±1%) - enabling precise timing for audio streaming, motor control loops, and synchronized multi-interface operation without external crystal dependency.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm, 0.5 mm pitch) package with 144 pins, thermally enhanced for sustained 216 MHz operation in industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F746ZGT7, STM32H743VIT6 offers significantly higher compute throughput and security features but sacrifices integrated Ethernet PHY and increases BOM complexity; STM32F767ZGT6 provides identical functionality with extended reliability specs - making it the optimal upgrade path for harsh-environment deployments.

Availability

STM32F746ZGT7 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging front-ends, and smart gateway routers requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STM32F746ZGT7 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 - optimized for industrial automation, medical instrumentation, and IoT edge gateways.

FAQ

What is the maximum operating temperature rating for STM32F746ZGT7?

The STM32F746ZGT7 is qualified for industrial temperature range: −40°C to +85°C ambient. This rating is defined in Section 6.3.1 of DS10916 Rev 5 and applies to all LQFP144-packaged variants. Thermal derating begins above 85°C ambient, and junction temperature must remain below 125°C per absolute maximum ratings.

Does STM32F746ZGT7 support USB High-Speed (480 Mbps) operation?

No - STM32F746ZGT7 supports USB 2.0 High-Speed *device/host/OTG* mode, but only with an external ULPI PHY. Its on-chip PHY is Full-Speed (12 Mbps) only. The OTG_HS peripheral requires connection to an external high-speed transceiver via ULPI interface to achieve 480 Mbps operation.

Can the LCD-TFT controller drive RGB888 (24-bit) displays?

Yes - the LTDC controller supports up to 24-bit RGB (R8G8B8) pixel format at XGA (1024×768) resolution. It provides three layers with alpha blending, dithering, and CLUT support. Pixel clock generation is programmable up to 65 MHz, sufficient for 60 Hz refresh on XGA panels with standard timing.

Is the 16 KB instruction TCM RAM accessible as general-purpose RAM?

Yes - the 16 KB ITCM RAM is mapped into the Cortex-M7's code bus and can be used as tightly coupled memory for critical routines or as general-purpose SRAM when not used for instruction caching. It supports byte/word access and is accessible via AXI bus with zero wait states, making it ideal for real-time ISRs or DSP kernels.