STMicroelectronics STM32H745IGK6TR

Overview

STM32H745IGK6TR from STMicroelectronics is a dual-core 32-bit Arm® Cortex®-M7 (up to 480 MHz) and Cortex®-M4 (up to 240 MHz) microcontroller with 2 MB flash, 1 MB RAM, integrated SMPS regulator, and 168 GPIOs. It supports real-time deterministic control, high-speed communication (CAN FD, USB HS/FS, Ethernet), and advanced analog (3× 16-bit ADCs, 2× DACs, OPAMPs), deployed in industrial motor drives and edge AI inference nodes.

For engineers reviewing the STM32H745IGK6TR datasheet, STM32H745IGK6TR pinout, STM32H745IGK6TR application, or STM32H745IGK6TR equivalent, key selection criteria include dual-core asymmetric execution capability, on-chip SMPS power efficiency, TFBGA240+25 package I/O density, and hardware JPEG/DFSDM co-processing for vision and sensor fusion systems.

Technical Context

The device implements a three-domain power architecture (D1/D2/D3) enabling independent clock gating and voltage scaling across performance, peripheral, and system-control subsystems. Its interconnect matrix comprises one AXI and two AHB bus matrices with five AHB2-APB bridges, supporting concurrent high-bandwidth data flows between CPU cores, DMA controllers (MDMA + dual-port DMAs), and peripherals.

Dual-core operation is coordinated via shared memory with hardware semaphores and interrupt forwarding; the M7 core handles compute-intensive tasks using L1 cache (16 KB I-Cache + 16 KB D-Cache), while the M4 executes real-time control loops with ART Accelerator-enabled flash execution at 240 MHz.

Key Specifications

Pinout & Package

STM32H745IGK6TR uses the TFBGA240+25 package (14 × 14 mm, 0.8 mm ball pitch) with 240 signal balls plus 25 dedicated power/ground balls. This high-density BGA supports full peripheral routing including dual Ethernet PHY interfaces, camera input (DCMI), LCD-TFT controller, and quad-SPI memory expansion.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H745IGK6TR, the H755ZIT6 adds cryptographic acceleration for secure firmware deployment, while the H743VIT6 trades SMPS, JPEG, and DFSDM for simpler packaging and lower BOM cost-making it viable only where those features are unused.

Availability

STM32H745IGK6TR is available at Aetrix Electronics and suitable for industrial motor control, edge AI vision nodes, secure gateways, and multi-protocol HMIs requiring stable component supply across long-lifecycle production programs.

Supply support for STM32H745IGK6TR 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 ICs, sensors, and automotive chips since 1987.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, heterogeneous processing, and integrated analog/multimedia acceleration-specifically for industrial automation, medical imaging, and intelligent edge devices.

FAQ

What is the maximum operating frequency of each core in STM32H745IGK6TR?

The Arm Cortex-M7 core operates at up to 480 MHz with double-precision FPU and L1 cache, delivering 1027 DMIPS; the Cortex-M4 core runs at up to 240 MHz with single-precision FPU and ART Accelerator, achieving 300 DMIPS. Both cores maintain independent clock trees and voltage scaling domains.

Does STM32H745IGK6TR support external SDRAM, and what interface is used?

Yes, it supports external SDRAM up to 125 MHz via the Flexible Memory Controller (FMC), which provides a 32-bit data bus and supports SDRAM/LPSDR SDRAM, PSRAM, NOR/NAND flash, and SRAM. The FMC is accessible from the D1 domain and integrates refresh control logic.

How does the integrated SMPS regulator improve system-level power efficiency?

The SMPS step-down converter directly supplies VCORE with up to 92% efficiency, reducing heat generation versus LDO-only solutions. It supports dynamic voltage scaling across six ranges and can also power external circuitry, enabling compact, fanless industrial designs with extended battery life in VBAT mode.

Can STM32H745IGK6TR execute code from external Quad-SPI flash, and what is the maximum interface speed?

Yes, it supports XIP (execute-in-place) from Quad-SPI flash via the QUADSPI interface, which operates up to 133 MHz in DDR mode. The interface supports octal and dual-struck protocols and integrates AHBS prefetch buffer to minimize instruction fetch stalls during high-speed execution.