STMicroelectronics STM32H747IIT6

Overview

STM32H747IIT6 from STMicroelectronics is a dual-core Arm® Cortex®-M7 (480 MHz) and Cortex®-M4 (240 MHz) microcontroller with 2 MB flash, 1 MB RAM (including 192 KB TCM), integrated SMPS regulator, MIPI DSI host, and hardware JPEG codec. It supports real-time deterministic control (M7) alongside low-latency peripheral handling (M4), enabling high-performance embedded vision, industrial HMI, and secure edge AI inference at the device level.

For engineers reviewing the STM32H747IIT6 datasheet, STM32H747IIT6 pinout, STM32H747IIT6 application, or STM32H747IIT6 equivalent, key selection considerations include dual-core inter-core communication latency, SMPS vs LDO power domain configuration, DSI timing compliance for display panels, and ITCM/DTCM memory partitioning for time-critical ISR execution.

Technical Context

The device implements a heterogeneous dual-core architecture with physically separate memory maps, cache hierarchies (16 KB I/D cache per core), and independent power domains (D1/D2/D3). Inter-core communication uses mailbox registers and shared SRAM with hardware semaphore support, avoiding software arbitration overhead.

Clock management includes three PLLs - one system PLL (up to 480 MHz), two kernel PLLs - all supporting fractional-N synthesis for precise peripheral clock generation. The SMPS regulator supplies VCORE directly at 1.05 V–1.32 V across six voltage scaling ranges, enabling dynamic performance/power trade-offs during runtime.

Key Specifications

Pinout & Package

STM32H747IIT6 is housed in a UFBGA169 package (7 × 7 mm, 0.5 mm ball pitch), optimized for high-density PCB layouts while maintaining thermal performance via exposed thermal pad. Pin assignment follows ST's standardized STM32H747xI series layout with dedicated power/ground balls, configurable I/O banks (GPIOA–GPIOI), and function-mapped peripheral pins including DSI lanes, FMC signals, and SMPS control terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H747IIT6, the STM32H757IIT6 adds certified cryptographic primitives without sacrificing compatibility, while the i.MX RT1176 trades integrated peripherals and power efficiency for higher clock speed and external memory bandwidth - making it suitable only where display/video acceleration is handled externally.

Availability

STM32H747IIT6 is available at Aetrix Electronics and suitable for industrial HMI, edge AI vision systems, secure gateways, and medical imaging subsystems requiring stable component supply across multi-year production cycles.

Supply support for STM32H747IIT6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with vertical manufacturing capability.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, rich multimedia support, and energy efficiency - specifically designed for next-generation human-machine interfaces, industrial automation, and intelligent edge devices.

FAQ

What is the maximum operating frequency of each core in the STM32H747IIT6?

The Cortex-M7 core operates up to 480 MHz with double-precision FPU and 16 KB instruction/data caches, 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 simultaneously under SMPS-supplied VCORE at voltage scaling range 0 (1.32 V).

Does the STM32H747IIT6 support hardware-accelerated encryption?

No - the STM32H747IIT6 does not include dedicated cryptographic accelerators (AES, PKA, RNG enhancements). It relies on software libraries or optional TRNG for basic entropy. For hardware crypto, ST recommends the pin-compatible STM32H757IIT6, which integrates AES-256-GCM, SHA-256, and public-key acceleration.

Can the MIPI DSI interface drive a 1080p display?

Yes - the integrated DSI host supports up to 4 data lanes and 1 clock lane at 2.5 Gbps per lane, enabling WUXGA (1920×1200) at 60 Hz with RGB888. Driving 1080p (1920×1080) requires proper impedance-controlled PCB routing and panel-specific timing configuration via the LTDC and DSI registers.

How many independent power domains does the STM32H747IIT6 feature?

The device implements three independent power domains: D1 (high-performance, hosts M7 core and GPU), D2 (communication/peripheral domain, hosts M4 core and USB/Ethernet), and D3 (low-power, contains reset/clock/power management logic). Each domain can be clock-gated or powered down individually to optimize system-level energy consumption.