STMicroelectronics STM32F746ZGT6

Overview

STM32F746ZGT6 from STMicroelectronics is a high-performance ARM Cortex-M7 microcontroller with FPU, 216 MHz max clock, 1 MB Flash, 320+16+4 KB RAM, integrated LCD-TFT controller, Ethernet MAC, USB OTG HS/FS, dual CAN, and hardware crypto acceleration - deployed in industrial HMI, medical imaging front-ends, and networked edge gateways.

For engineers reviewing the STM32F746ZGT6 datasheet, STM32F746ZGT6 pinout, STM32F746ZGT6 application, or STM32F746ZGT6 equivalent, key selection criteria include LQFP144 package compatibility, 216 MHz real-time execution with ART Accelerator™ and L1 cache, triple 12-bit ADC (7.2 MSPS interleaved), Chrom-ART DMA2D graphics acceleration, and IEEE 1588v2 Ethernet timing support.

Technical Context

The STM32F746ZGT6 implements an Arm Cortex-M7 core with FPU, adaptive real-time accelerator (ART Accelerator™), and 4 KB instruction + 4 KB data L1 cache - enabling zero-wait-state execution from Flash and external memories. It integrates dual-mode Quad-SPI, parallel DCMI (54 MB/s), and LCD-TFT controller supporting XGA resolution.

Its connectivity stack includes USB 2.0 HS/FS OTG with dedicated DMA and ULPI interface, 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping, two bxCAN 2.0B controllers, SPDIFRX, HDMI-CEC, and six SPIs (50 Mbit/s) with muxed I2S for audio-class accuracy via dedicated PLLs.

Key Specifications

Pinout & Package

LQFP144 package with exposed thermal pad; 144 leads, 0.5 mm pitch, 20 × 20 mm body size, JEDEC MS-026AC compliant. Pinout validated per STMicroelectronics DS10916 Rev 5, Section 4 (Pinouts and pin description).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F746ZGT6, STM32H743VIT6 trades integrated display/Ethernet for higher CPU performance and dual-core flexibility, while STM32F767ZGT6 enhances security and memory but removes Ethernet - making STM32F746ZGT6 optimal for cost-sensitive, graphics-and-connectivity balanced designs.

Availability

STM32F746ZGT6 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 production traceability.

Supply support for STM32F746ZGT6 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.

The STM32F7 series targets high-end embedded applications demanding real-time performance, rich connectivity, and advanced graphics - designed for industrial automation, medical devices, and IoT edge nodes where Cortex-M7 capabilities meet robust peripheral integration.

FAQ

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

The STM32F746ZGT6 achieves 216 MHz using its Arm Cortex-M7 core with ART Accelerator™ and 4 KB instruction/data L1 cache. This configuration eliminates Flash wait states and enables deterministic execution. The system clock derives from PLL sources including HSE (4–26 MHz), HSI (16 MHz), or PLLSAI, with voltage scaling enabled for full-speed operation under 3.3 V supply.

Does STM32F746ZGT6 support external SDRAM, and what interface is used?

Yes, it supports external SDRAM via the Flexible Memory Controller (FMC) with 32-bit data bus capability. The FMC provides dedicated control signals (RAS/CAS, CLK, CKE, DQM) and supports LPDDR/SDR SDRAM protocols. Configuration is managed through FMC_BCR/FMC_BTR registers, and initialization requires precise timing calibration per JEDEC standards.

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

The integrated LCD-TFT controller supports parallel 8080/6800 modes and RGB interface up to XGA (1024×768) resolution. It provides dedicated pins for HSYNC, VSYNC, DE, and 24-bit RGB data, eliminating external timing logic. Pixel clock generation is programmable up to 65 MHz, and the Chrom-ART Accelerator™ handles layer composition and alpha blending in hardware.

What low-power modes are available, and which peripherals remain active in Stop mode?

It supports Sleep, Stop, and Standby modes. In Stop mode with regulator ON, the 16-bit low-power timer (LPTIM1), RTC, backup SRAM, and certain I/Os remain active. The FMC, ADC, DAC, and most clocks are gated. Wake-up sources include EXTI lines, LPTIM1, RTC alarm, and USB wakeup - with typical wake-up time under 5 µs from Stop mode.