STMicroelectronics STM32H757IIT6

Overview

STM32H757IIT6 from STMicroelectronics is a dual-core Arm® Cortex®-M7 (480 MHz) and Cortex®-M4 (240 MHz) microcontroller with 2 MB flash, 1 MB RAM (192 KB TCM + 864 KB SRAM), integrated SMPS regulator, MIPI DSI host, and hardware JPEG codec. It targets high-performance embedded applications requiring real-time processing, graphics rendering, and secure connectivity - such as industrial HMIs, medical imaging front-ends, and automotive dashboard controllers.

For engineers reviewing the STM32H757IIT6 datasheet, STM32H757IIT6 pinout, STM32H757IIT6 application, or STM32H757IIT6 equivalent, key selection considerations include dual-core inter-core communication latency, SMPS vs LDO supply configuration trade-offs, DSI timing compliance for display panels, and cryptographic acceleration support for secure firmware updates.

Technical Context

The device implements a three-domain power architecture (D1/D2/D3), enabling independent clock gating and voltage scaling across high-performance compute (D1), peripheral-rich I/O (D2), and low-power management (D3) 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, and peripherals.

Dual-core operation is coordinated via shared memory regions, mailbox registers, and hardware semaphores; the M7 core handles time-critical tasks (e.g., motor control loops at 240 MHz), while the M4 manages communication stacks (CAN FD, USB OTG HS/FS, Ethernet MAC) and sensor fusion. The ART Accelerator enables zero-wait-state execution from internal flash at up to 240 MHz for the M4 core.

Key Specifications

Pinout & Package

STM32H757IIT6 uses a UFBGA169 package (7 × 7 mm, 0.5 mm pitch) with 168 user I/Os and dedicated power/ground balls. Pin functions are validated per ST's DS12931 Rev 5, Section 5 (Pinout and Alternate Functions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-core Arm Cortex-M7/M4 microcontroller applications.

Compared with STM32H747IIT6, the STM32H757IIT6 adds SMPS for >30% lower system power in battery-backed or thermally constrained designs, plus DSI and JPEG for self-contained display systems. Versus i.MX RT1176DVMAA, it trades peak M7 clock speed for integrated flash, lower pin count, and simpler power delivery - favoring rapid development of compact, certified industrial devices.

Availability

STM32H757IIT6 is available at Aetrix Electronics and suitable for industrial HMIs, medical imaging front-ends, automotive digital dashboards, and secure IoT gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32H757IIT6 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 specializing in microcontrollers, power management, sensors, and automotive ICs, with manufacturing facilities across Europe, Asia, and North America.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, rich graphics, advanced security, and energy efficiency - particularly in industrial automation, healthcare, and automotive domains.

FAQ

What is the maximum operating frequency of each core in the STM32H757IIT6?

The Arm Cortex-M7 core operates at up to 480 MHz with double-precision FPU and L1 cache (16 KB instruction + 16 KB data), delivering 1027 DMIPS. The Cortex-M4 core runs at up to 240 MHz with single-precision FPU and ART Accelerator, achieving 300 DMIPS. Both frequencies are achievable under full voltage scaling (Range 0) with SMPS enabled and proper thermal management.

Does the STM32H757IIT6 support hardware-accelerated cryptography for TLS 1.3?

Yes - it integrates dedicated AES-128/192/256, SHA-2 (SHA-224/256/384/512), and HMAC engines, enabling full TLS 1.3 handshake acceleration without CPU intervention. The TRNG provides entropy for key generation, and secure firmware upgrade mechanisms protect against rollback attacks during over-the-air updates.

Can the STM32H757IIT6 drive a 1080p display via its DSI interface?

No - the MIPI DSI host supports up to XGA resolution (1024×768) at typical D-PHY lane rates. Driving native 1080p (1920×1080) requires external bridge ICs or pixel doubling; the internal LTDC controller's maximum pixel clock is 90 MHz, limiting practical resolution to ~1280×800 at 60 Hz with RGB888.

How many independent power domains does the STM32H757IIT6 implement, and what do they control?

It implements three independent power domains: D1 (high-performance compute, including M7 core and AXI bus), D2 (communication peripherals, timers, and AHB buses), and D3 (reset/clock/power management, including RTC and LSE). Each domain supports independent clock gating, voltage scaling, and power-down states - enabling fine-grained power optimization per subsystem.