STMicroelectronics STM32H747IGT6

Overview

STM32H747IGT6 from STMicroelectronics is a dual-core 32-bit Arm® Cortex®-M7 (480 MHz) and Cortex®-M4 (240 MHz) microcontroller with 2 MB flash, 1 MB RAM (including 192 KB TCM), and integrated SMPS regulator. It features DSI host, LCD-TFT controller, hardware JPEG codec, and 46 communication/analog peripherals - deployed in industrial HMI, medical imaging front-ends, and real-time motor control systems.

For engineers reviewing the STM32H747IGT6 datasheet, STM32H747IGT6 pinout, STM32H747IGT6 application, or STM32H747IGT6 equivalent, key selection considerations include dual-core interprocessor communication latency, SMPS vs LDO supply configuration trade-offs, DSI timing compliance for MIPI display interfaces, and TCM RAM allocation across M7/M4 domains.

Technical Context

The device implements three independent power domains (D1/D2/D3) enabling selective clock gating and domain shutdown. Its interconnect matrix comprises one AXI and two AHB bus matrices with five AHB2-APB and two AXI2-AHB bridges to manage concurrent high-bandwidth traffic from dual cores, DMA2D, Ethernet MAC, and DSI host.

Dual-core operation is coordinated via shared memory, mailbox, and semaphore peripherals; the M7 core handles compute-intensive tasks (e.g., JPEG decode, FFT) using ITCM/DTCM, while the M4 executes real-time control loops with deterministic latency using its dedicated 128 KB DTCM and ART Accelerator for flash execution.

Key Specifications

Pinout & Package

STM32H747IGT6 is packaged in LQFP176 (24 × 24 mm, 0.5 mm pitch), with 176 leads arranged in quad configuration. The package supports full I/O remapping and includes dedicated VCAP pins for SMPS stability, VREF+ for ADC reference, and multiple VDD/VSS pairs for noise isolation across analog/digital domains.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core microcontroller applications.

Compared with STM32H747IGT6, STM32H757IIT6 trades SMPS efficiency for hardware crypto acceleration, while i.MX RT1176DVMAA delivers higher clock rates at the cost of external power management and display interface components - making STM32H747IGT6 optimal for cost-sensitive, power-constrained MIPI-based HMI designs.

Availability

STM32H747IGT6 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging front-ends, real-time motor control, and connected edge gateway applications requiring stable component supply across multi-year production cycles.

Supply support for STM32H747IGT6 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 strong industrial and automotive focus.

The STM32H7 series targets high-performance embedded applications demanding real-time determinism, rich connectivity, and advanced graphics - designed specifically for next-generation industrial automation, medical equipment, and human-machine interfaces.

FAQ

What is the maximum operating frequency of each core in STM32H747IGT6?

The Arm Cortex-M7 core operates up to 480 MHz with double-precision FPU and L1 cache, delivering 1027 DMIPS; the Cortex-M4 core runs up to 240 MHz with single-precision FPU and ART Accelerator, achieving 300 DMIPS. Both frequencies are achievable under full voltage scaling (Range 0) with SMPS enabled and proper thermal management.

Does STM32H747IGT6 support MIPI DSI without external PHY?

Yes - STM32H747IGT6 integrates a MIPI D-PHY compliant DSI host with built-in regulator and lane calibration logic. It directly drives MIPI DSI displays up to XGA resolution without external PHY chips, provided layout follows ST's impedance and length-matching guidelines for D0P/D0N through D3P/D3N lanes.

How does the SMPS regulator impact power consumption compared to LDO mode?

In Run mode at 480 MHz, SMPS reduces total system current by ~35% versus LDO-only operation (e.g., 125 mA vs 192 mA typical). This gain scales with core frequency and active peripherals; however, SMPS requires two external 2.2 µF VCAP capacitors and careful PCB layout to avoid instability or EMI issues.

Can both Cortex-M7 and Cortex-M4 cores access the same peripheral simultaneously?

No - peripherals are assigned to specific power domains (D1/D2/D3) and protected by hardware semaphores. For example, Ethernet MAC resides in D2 and is accessible only by M4 unless explicitly unlocked via domain-crossing semaphore. Concurrent access attempts trigger bus error or priority arbitration, preventing corruption.