STMicroelectronics STM32H747XIH6U

Overview

STM32H747XIH6U 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), integrated SMPS regulator, DSI host interface, and 168 GPIOs. It targets high-performance embedded applications requiring real-time processing, graphics acceleration, and low-power operation - such as industrial HMIs, medical imaging front-ends, and automotive infotainment gateways.

For engineers reviewing the STM32H747XIH6U datasheet, STM32H747XIH6U pinout, STM32H747XIH6U application, or STM32H747XIH6U equivalent, key selection considerations include dual-core asymmetric execution capability, on-chip voltage scaling across six ranges, hardware JPEG codec, MIPI D-PHY integration, and support for up to 125 MHz SDRAM interfaces.

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, supporting concurrent high-bandwidth data flows between CPU cores, DMA controllers, and peripherals.

Dual-core operation is coordinated via shared memory, semaphores, and interrupt forwarding through the NVIC. The M7 core features double-precision FPU, 16 KB I-cache/16 KB D-cache, and MPU; the M4 core includes single-precision FPU, ART Accelerator for flash execution, and MPU - both support TrustZone security extensions.

Key Specifications

Pinout & Package

UFBGA169 package with 0.5 mm ball pitch, 7 × 7 mm body size, and standard BGA thermal and mechanical characteristics per STMicroelectronics specification A0YV. Ball grid layout supports high-speed signal integrity for DDR, DSI, and Ethernet interfaces.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H747XIH6U, STM32H757IIK6 trades DSI for crypto acceleration - ideal for secure gateways - while i.MX RT1176DVMAA delivers higher CPU clocks but increases BOM cost and design complexity due to external power and display components.

Availability

STM32H747XIH6U is available at Aetrix Electronics and suitable for industrial HMIs, medical imaging front-ends, and automotive infotainment gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32H747XIH6U 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.

The STM32H7 series targets high-end embedded applications demanding real-time performance, advanced graphics, and energy efficiency - particularly in industrial automation, medical devices, and automotive systems.

FAQ

What is the maximum operating frequency of each core in the STM32H747XIH6U?

The Arm Cortex-M7 core operates at up to 480 MHz (1027 DMIPS), while the Cortex-M4 core runs at up to 240 MHz (300 DMIPS). Both frequencies are achievable simultaneously under full voltage scaling (Range 0) with SMPS supplying VCORE at 1.3 V. Frequency scaling is dynamically adjustable via the RCC register interface.

Does the STM32H747XIH6U support external SDRAM, and what is the maximum clock rate?

Yes, it supports external SDRAM via the Flexible Memory Controller (FMC) with up to 32-bit data bus width. The maximum synchronous clock rate is 125 MHz, enabling theoretical bandwidth of 4 Gbps with x16 SDRAM. Layout requires matched trace lengths and termination per JEDEC JESD79-4B specifications.

How does the integrated SMPS regulator impact PCB design compared to traditional LDO-based solutions?

The SMPS requires two external components: a 2.2 µF VCAP capacitor placed within 2 mm of VCAP pins, and an external 1 µH inductor with ≤ 100 mΩ DCR. Unlike LDOs, it demands careful EMI filtering (ferrite bead + 10 nF capacitor) on the SW output and strict separation from sensitive analog traces to avoid switching noise coupling into ADC/DAC paths.

Can the STM32H747XIH6U's DSI interface drive standard MIPI DSI displays without additional level-shifting circuitry?

Yes - the integrated D-PHY complies with MIPI D-PHY v1.2 spec and provides native 1.2 V differential signaling. It drives standard MIPI DSI displays directly using 100 Ω differential routing; no level shifters are needed. However, the host must implement DSI protocol stack (e.g., via STM32CubeMX middleware) and configure lane count, burst mode, and video timing parameters per display vendor's timing sheet.