STMicroelectronics STM32F746NEH6

Overview

STM32F746NEH6 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 STM32F746NEH6 datasheet, STM32F746NEH6 pinout, STM32F746NEH6 application, or STM32F746NEH6 equivalent, key selection criteria include its 216 MHz Cortex-M7 core with ART Accelerator™, dual-mode Quad-SPI interface, Chrom-ART Accelerator™ for DMA2D graphics rendering, IEEE 1588v2-capable Ethernet MAC, and TFBGA100 (8×8 mm) package with 100 I/Os.

Technical Context

The device implements a tightly coupled memory architecture with 4 KB instruction and 4 KB data L1 caches plus adaptive real-time accelerator (ART) enabling zero-wait-state execution from flash. Its AXI-AHB bus matrix supports concurrent high-bandwidth access to SRAM, peripherals, and external memory via FMC.

It integrates dual CAN 2.0B controllers, two SAI audio interfaces with internal audio PLL support, SPDIFRX receiver, HDMI-CEC, and a parallel 8–14-bit DCMI camera interface capable of 54 MB/s throughput - all synchronized under a multi-source clock system including HSE (4–26 MHz), HSI (16 MHz), and LSE (32.768 kHz).

Key Specifications

Pinout & Package

STM32F746NEH6 uses a TFBGA100 (8×8 mm, 0.8 mm pitch) package with 100 solder balls arranged in a 10×10 grid. Ball pitch and mechanical dimensions comply with JEDEC MO-276AA standard. The package supports fine-pitch PCB assembly and thermal dissipation suitable for industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F767IGT6 and STM32H743VIT6, the STM32F746NEH6 offers optimal balance of graphics acceleration (Chrom-ART), compact TFBGA100 footprint, and proven industrial Ethernet/CAN integration - making it ideal for space-constrained HMI and gateway designs where XGA display and deterministic networking are primary requirements.

Availability

STM32F746NEH6 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging front-ends, and smart building gateways requiring stable component supply, long-term lifecycle assurance, and qualified sourcing for production ramp.

Supply support for STM32F746NEH6 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 components for industrial, automotive, and consumer markets.

The STM32F7 series targets high-end embedded applications demanding real-time performance, rich graphics, and multi-protocol connectivity - specifically engineered for human-machine interfaces, industrial automation, and networked edge devices.

FAQ

What is the maximum operating temperature range for STM32F746NEH6?

The STM32F746NEH6 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is validated per ST's DS10916 Rev 5 specification, with thermal derating applied above 70 °C for sustained operation in enclosed enclosures. Junction temperature must not exceed 125 °C under any condition.

Does STM32F746NEH6 support external SDRAM?

Yes, STM32F746NEH6 supports external SDRAM via its Flexible Memory Controller (FMC) with full compatibility for LPDDR/SDR SDRAM and LPSDR SDRAM. Pinout includes dedicated SDRAM clock, address, data, and control signals (e.g., SDCKE, SDCLK, SDNCAS, SDNRAS), and timing parameters are fully configurable in registers.

How many independent CAN interfaces does STM32F746NEH6 provide?

STM32F746NEH6 integrates two independent bxCAN 2.0B controllers, each with its own message RAM, filter banks, and transmit/receive FIFOs. Both support loopback mode, time-triggered communication, and automatic retransmission - enabling redundant fieldbus communication or multi-network routing in industrial gateways.

Is the Chrom-ART Accelerator™ (DMA2D) available in all STM32F746xx variants?

Yes, Chrom-ART Accelerator™ (DMA2D) is a standard feature across all STM32F746xx devices, including STM32F746NEH6. It is not optional or package-dependent. The peripheral is accessible via AHB bus and supports memory-to-memory, memory-to-peripheral, and peripheral-to-memory transfers with color format conversion and alpha blending.