STMicroelectronics STM32H725IGK6

Overview

STM32H725IGK6 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 delivering up to 3.6 MSPS, and integrated FD-CAN, Ethernet MAC, USB HS/FS OTG, and Chrom-ART Accelerator. It targets real-time industrial HMI, motor control gateways, and edge AI inference nodes requiring deterministic low-latency execution and graphics acceleration.

For engineers reviewing the STM32H725IGK6 datasheet, STM32H725IGK6 pinout, STM32H725IGK6 application, or STM32H725IGK6 equivalent, key selection considerations include its VFQFPN68 package with 68 pins, dual 16-bit ADC interleaving capability, embedded DC-DC regulator, L1 cache configuration (32 KB I-cache + 32 KB D-cache), and support for XiP via dual Octo-SPI interfaces.

Technical Context

The device implements a dual-bank Arm Cortex-M7 core with double-precision FPU, MPU, and tightly coupled memory architecture-128 KB TCM RAM (split into 128 KB data TCM and configurable instruction TCM remapping) enabling zero-wait-state code execution. Its memory subsystem includes ECC-protected flash and SRAM, flexible external memory controller (FMC) supporting SDRAM/NOR/NAND, and two Octo-SPI interfaces with execute-in-place (XiP) capability.

Peripherals are organized around four DMA controllers-including one MDMA with linked-list support-and feature hardware accelerators: CORDIC for trigonometric computation, FMAC for digital filtering, Chrom-ART (DMA2D) for 2D graphics composition, and DFSDM for sigma-delta modulator filtering. Clocking uses multiple PLLs (main, audio, USB, ADC) with independent domain control and sub-second RTC accuracy.

Key Specifications

Pinout & Package

STM32H725IGK6 is housed in a 68-pin Very Thin Quad Flat No-lead (VFQFPN) package measuring 8 mm × 8 mm with 0.4 mm pitch and an exposed thermal pad. This compact, thermally enhanced package supports high-density PCB layouts and efficient heat dissipation in space-constrained industrial and automotive applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance Cortex-M7 microcontroller applications.

Compared with STM32H725IGK6, the H735IGK6 adds hardware crypto acceleration for faster secure boot and OTA, while the H723ZGT6 trades SMPS integration and RAM headroom for larger pin count and LQFP manufacturability-making the IGK6 optimal for compact, thermally demanding, and power-sensitive industrial edge nodes.

Availability

STM32H725IGK6 is available at Aetrix Electronics and suitable for industrial motor control gateways, edge-AI vision nodes, smart energy metering hubs, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and full traceability.

Supply support for STM32H725IGK6 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 analog devices for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, rich connectivity, and graphics capability-specifically engineered for industrial automation, motor control, and intelligent edge devices where performance-per-watt and peripheral integration are critical.

FAQ

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

The STM32H725IGK6 achieves 550 MHz via its Arm Cortex-M7 core with dual-issue superscalar pipeline and L1 cache. This frequency requires stable 1.2 V core supply, proper VCAP decoupling (2.2 µF per pin), and use of internal PLL with HSE or HSI as source. Thermal derating applies above 85°C ambient; junction temperature must remain ≤105°C for sustained operation.

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

Yes, STM32H725IGK6 supports external SDRAM through its Flexible Memory Controller (FMC) with 16-bit data bus and address multiplexing. It supports LPDDR/SDR/DDR1 SDRAM with programmable timing registers, enabling up to 128 MB expansion. The FMC operates independently of the AHB bus, allowing concurrent CPU access and DMA transfers without contention.

How does the embedded SMPS regulator differ from traditional LDOs in this package?

The VFQFPN68 variant integrates a synchronous step-down SMPS (buck converter) replacing the standard LDO for Vcore. It delivers >85% efficiency at 200 mA load versus ~60% for LDOs, significantly reducing thermal load. It requires external components: 1 µH inductor, 10 µF output capacitor, and compensation network per datasheet Figure 12 in Section 3.7.3.

Can the two 16-bit ADCs operate simultaneously in interleaved mode, and what is the effective resolution?

Yes, ADC1 and ADC2 can be configured in dual interleaved mode achieving 7.2 MSPS aggregate sampling rate. Effective resolution remains 16 bits with ENOB ≥14.2 bits at 100 kHz input, verified by AC characteristics in Section 6.3.22 of DS13311 Rev 5. Interleaving requires synchronization via TIMx trigger and shared DMA channel with double-buffering enabled.