STMicroelectronics STM32H757AII6

Overview

STM32H757AII6 from STMicroelectronics is a dual-core Arm® Cortex®-M7 (480 MHz) + Cortex®-M4 (240 MHz) MCU with 2 MB flash, 1 MB RAM (192 KB TCM), and integrated SMPS regulator. It features DSI host, MIPI D-PHY, hardware JPEG codec, and cryptographic acceleration (AES-256, SHA-2, RNG), targeting high-performance embedded vision and industrial HMI applications.

For engineers reviewing the STM32H757AII6 datasheet, STM32H757AII6 pinout, STM32H757AII6 application, or STM32H757AII6 equivalent, key selection criteria include dual-core real-time partitioning, on-chip SMPS for power efficiency, DSI interface for display integration, and hardware crypto 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 performance, communication, and control subsystems. Its interconnect matrix includes 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, mailbox, and semaphore mechanisms, with the M7 core handling compute-intensive tasks (e.g., JPEG decode, motor control algorithms) while the M4 manages real-time I/O (CAN FD, USB OTG, SDMMC) and low-latency control loops using its ART Accelerator for deterministic flash execution.

Key Specifications

Pinout & Package

STM32H757AII6 uses a UFBGA169 package (7 × 7 mm, 0.5 mm pitch) with 146 user I/O pins and dedicated power/ground balls. Pin functions include dual-core debug (SWD/JTAG), dual VCAP inputs for SMPS stability, and dedicated DSI lane pairs (CLKP/N, DAT0P/N–DAT3P/N) routed to edge rows for impedance control.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H747IIT6, the STM32H757AII6 adds SMPS and DSI for self-contained power/display integration; versus i.MX RT1176DVMAA, it trades peak M7 frequency for lower system-level complexity and certified security peripherals.

Availability

STM32H757AII6 is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, medical imaging nodes, and high-end motor drive controllers requiring stable component supply across multi-year production cycles.

Supply support for STM32H757AII6 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 with strong industrial and consumer market presence.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, graphical capability, and hardware security - designed specifically for next-generation industrial automation, medical devices, and smart infrastructure.

FAQ

What is the maximum operating frequency of each core in the STM32H757AII6?

The 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 validated under full voltage scaling and thermal conditions per DS12931 Rev 5.

Does the STM32H757AII6 support hardware-accelerated JPEG encoding and decoding?

Yes - it integrates a dedicated hardware JPEG codec supporting full encode/decode pipelines for YUV422 and RGB565 formats. Performance reaches 60 fps at 640×480 resolution, with DMA-driven frame buffering and zero CPU intervention during compression/decompression operations.

How does the integrated SMPS regulator improve power efficiency compared to traditional LDO-based designs?

The on-chip SMPS step-down converter directly supplies VCORE with up to 92% efficiency across load ranges, reducing heat dissipation and enabling 2.95 µA Standby current (RTC/LSE active). In contrast, an external LDO would draw >15 µA in same mode and require larger decoupling capacitance.

Can the STM32H757AII6 drive a MIPI DSI display without external components?

Yes - it includes a fully integrated MIPI DSI host with D-PHY physical layer supporting up to 4 data lanes + clock lane at 1.5 Gbps per lane. Only passive termination resistors and a 2.2 µF VCAP capacitor per SMPS output are required; no external level shifters or timing controllers needed.