STMicroelectronics STM32H743XIH6

Overview

STM32H743XIH6 from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller operating at up to 480 MHz, featuring 2 MB flash, 1 MB RAM (including 192 KB TCM), dual CAN FD interfaces, and hardware JPEG codec. It integrates LCD-TFT controller, Chrom-ART accelerator, and high-resolution timer for real-time industrial HMI and motor control applications.

For engineers reviewing the STM32H743XIH6 datasheet, STM32H743XIH6 pinout, STM32H743XIH6 application, or STM32H743XIH6 equivalent, key selection criteria include dual-domain power management (D1/D2/D3), 16-bit ADC resolution at 3.6 MSPS, Quad-SPI interface up to 133 MHz, and USB OTG HS/FS with crystal-less LPM support.

Technical Context

The STM32H743XIH6 implements a triple-domain power architecture (D1 high-performance, D2 communication/timers, D3 reset/clock/power), enabling selective clock gating and voltage scaling across six configurable ranges. Its interconnect matrix comprises one AXI and two AHB bus matrices with five AHB2-APB bridges, supporting concurrent high-bandwidth peripheral access.

It features three independent PLLs - one system clock PLL and two kernel-clock PLLs with fractional mode - feeding multiple clock domains including CPU, peripherals, audio, and Ethernet. The device supports true low-power operation with 2.95 µA Standby current (RTC/LSE ON, Backup SRAM OFF) and VBAT battery charging capability.

Key Specifications

Pinout & Package

STM32H743XIH6 is housed in a 176-pin LQFP package (24 × 24 mm, 0.5 mm pitch), compliant with ECOPACK2 environmental standards. Pin functions are defined per alternate function mapping across GPIO banks A–K, supporting multiplexed roles for all major peripherals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743XIH6, the H753VIT6 adds security IP without sacrificing performance or pinout, while the H743VIT6 reduces I/O count and peripheral integration in a smaller package - both maintain binary compatibility for core firmware but differ in scalability and trust features.

Availability

STM32H743XIH6 is available at Aetrix Electronics and suitable for industrial HMI, real-time motor control, medical imaging edge nodes, and secure industrial gateways requiring stable component supply across long-lifecycle programs.

Supply support for STM32H743XIH6 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 determinism, rich graphics, and multi-protocol connectivity - designed for industrial automation, medical devices, and advanced human-machine interfaces.

FAQ

What is the maximum operating frequency and associated performance metric?

The STM32H743XIH6 operates at up to 480 MHz on its Arm Cortex-M7 core, delivering 1027 DMIPS (Dhrystone 2.1) at 2.14 DMIPS/MHz. This performance is sustained with dual 16 KB L1 caches (instruction and data), enabling high-throughput execution of complex control algorithms and real-time signal processing tasks.

Does this MCU support external SDRAM, and what interface is used?

Yes, the STM32H743XIH6 supports external SDRAM up to 32-bit wide via its Flexible Memory Controller (FMC), which operates in synchronous mode at up to 100 MHz. The FMC also supports PSRAM, NOR/NAND flash, and SRAM, providing flexible memory expansion for GUI buffers, frame storage, or large data tables.

How many CAN interfaces does it have, and what protocols do they support?

The STM32H743XIH6 integrates two CAN FD controllers (FDCAN1 and FDCAN2), both supporting Classical CAN, CAN FD (up to 5 Mbps data rate), and ISO 11898-1 physical layer compliance. Neither supports time-triggered CAN (TT-CAN); that feature is present only on the STM32H742 variant per the datasheet.

What low-power modes are available, and what is the lowest current consumption?

The device offers Sleep, Stop, Standby, and VBAT modes. In Standby mode with Backup SRAM disabled and RTC + LSE enabled, typical current consumption is 2.95 µA. VBAT mode supports battery-backed operation and charging, allowing real-time clock and backup registers to remain active during main power loss.