STMicroelectronics STM32H725IGK3TR

Overview

STM32H725IGK3TR from STMicroelectronics is a high-performance Arm® Cortex®-M7 32-bit microcontroller operating at up to 550 MHz, featuring 1 MB flash with ECC, 564 KB SRAM (all with ECC), dual 16-bit ADCs (3.6 MSPS), Ethernet MAC, USB 2.0 HS/FS OTG, and three FD-CAN interfaces. It targets graphics-rich industrial HMI, motor control gateways, and real-time edge nodes requiring deterministic low-latency execution and multi-interface connectivity.

For engineers reviewing the STM32H725IGK3TR datasheet, STM32H725IGK3TR pinout, STM32H725IGK3TR application, or STM32H725IGK3TR equivalent, key selection considerations include its VFQFPN68 package with 68 pins, integrated DCDC regulator, dual TCM RAM architecture for real-time code/data isolation, and hardware accelerators (CORDIC, FMAC, Chrom-ART) enabling efficient signal processing and GUI rendering without CPU overhead.

Technical Context

The device implements a dual-bank Arm Cortex-M7 core with 32-KB instruction and 32-KB data L1 caches, enabling zero-wait-state execution from flash or external memory. Its memory subsystem includes 128 KB data TCM RAM, 256 KB remappable instruction TCM RAM, and 4 KB backup SRAM - all protected by ECC for functional safety compliance.

Peripherals are orchestrated via a multi-layer AHB/APB bus matrix supporting concurrent high-bandwidth transfers: Ethernet MAC and USB OTG_HS each have dedicated DMAs; two Octo-SPI interfaces support XiP; and three FD-CAN controllers operate independently with time-triggered (TT-CAN) capability on FDCAN1.

Key Specifications

Pinout & Package

STM32H725IGK3TR uses a 68-pin VFQFPN (8 × 8 mm, 0.4 mm pitch) package with exposed thermal pad. This compact, thermally enhanced package supports high-density PCB layouts while enabling efficient heat dissipation for sustained 550 MHz operation under industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H725IGK3TR, the H735IGK6 prioritizes security over power efficiency, while the H723ZGT6 trades integration and density for lower BOM cost and simpler layout - making the IGK3TR optimal for space-constrained, networked industrial edge devices requiring balanced performance, power, and peripheral richness.

Availability

STM32H725IGK3TR is available at Aetrix Electronics and suitable for industrial HMI panels, smart motor drive gateways, and edge AI sensor hubs requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability under extended temperature ranges.

Supply support for STM32H725IGK3TR 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 focus on industrial and automotive markets.

The STM32H7 series delivers heterogeneous dual-core and hardware-accelerated MCUs targeting real-time edge intelligence, deterministic control, and rich human-machine interaction in resource-constrained environments.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32H725IGK3TR achieves 550 MHz via its Arm Cortex-M7 core with dual 32-KB L1 caches (instruction and data), allowing zero-wait-state execution from embedded flash or external memory. This requires proper VDD/VDDA regulation, thermal management within the VFQFPN68 package's 105°C junction limit, and correct clock tree configuration using the internal PLL with HSE or HSI as source.

Does this MCU support functional safety standards like IEC 61508?

Yes - the STM32H725IGK3TR includes hardware features required for ASIL-B compliance: ECC on all SRAM and flash, lock-step capable peripherals (via software configuration), memory protection unit (MPU), CRC calculation unit, and failure monitoring via independent watchdogs. ST provides certified safety packages including FMEDA reports and safety manuals aligned with IEC 61508 and ISO 26262.

Can the integrated DCDC regulator be used with all supply voltages?

No - the integrated SMPS DCDC regulator in the VFQFPN68 variant operates only with input voltage between 2.7 V and 3.6 V and outputs 1.2 V for the core. Below 2.7 V, the device automatically switches to LDO mode. The DCDC must be disabled if VDDA is below 2.4 V to prevent analog performance degradation, as specified in Section 6.3.3 of DS13311 Rev 5.

How many FD-CAN interfaces does STM32H725IGK3TR support and what are their key capabilities?

The STM32H725IGK3TR integrates three fully independent FD-CAN controllers (FDCAN1–FDCAN3), each supporting ISO 11898-1:2015, bit rates up to 5 Mbps, payload sizes up to 64 bytes, and flexible data-rate switching. FDCAN1 additionally supports time-triggered communication (TT-CAN) for deterministic scheduling in synchronized networks.