STMicroelectronics STM32H7S7I8K6

Overview

STM32H7S7I8K6 from STMicroelectronics is an Arm® Cortex®-M7 32-bit microcontroller operating at up to 600 MHz, featuring 64 KB flash, 620 KB SRAM (548 KB with ECC), dual FD-CAN interfaces, Ethernet MAC, and hardware-accelerated graphics (NeoChrom GPU2D + Chrom-ART DMA2D). It targets high-performance embedded applications requiring real-time control, secure firmware updates, and rich UI rendering - such as industrial HMIs and edge AI gateways.

For engineers reviewing the STM32H7S7I8K6 datasheet, STM32H7S7I8K6 pinout, STM32H7S7I8K6 application, or STM32H7S7I8K6 equivalent, key selection considerations include its dual FD-CAN support for automotive diagnostics, on-the-fly external memory encryption, PSA Level 2/SESIP Level 3 security certification, and integrated JPEG codec for camera-based vision preprocessing.

Technical Context

The device implements a dual-bank Arm Cortex-M7 core with L1 instruction/data caches (32+32 KB), enabling zero-wait-state execution from flash or external memories. Its memory architecture includes TCM RAM (64+64 KB), AXI SRAM (384 KB), and 4 KB backup SRAM, all accessible via a flexible bus-interconnect matrix supporting concurrent high-bandwidth transfers.

Security is enforced through root-of-trust boot, secure hide protection area (HDP), embedded root secure services (RSS) for SFI/SFU, and dual AES coprocessors - one DPA-resistant - alongside PKA for ECC verification and HASH acceleration. Graphics acceleration leverages NeoChrom GPU2D for rotation/scaling and Chrom-GRC (GFXMMU) for 20% resource optimization.

Key Specifications

Pinout & Package

STM32H7S7I8K6 is packaged in LQFP176 (24 × 24 mm), a thermally robust, leaded surface-mount package suitable for industrial PCB assembly and rework. Pin count and layout align with ST's H7S series footprint compatibility across LQFP100/144/176 variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H7S7I8K6, the K7 variant extends thermal capability without functional change, while the H7A3ZIT6 trades FD-CAN and graphics acceleration for larger flash - making it unsuitable for CAN FD–dependent or UI-rich designs despite higher memory capacity.

Availability

STM32H7S7I8K6 is available at Aetrix Electronics and suitable for industrial HMIs, automotive diagnostic gateways, edge AI vision nodes, and secure IoT gateways requiring stable component supply across long-lifecycle deployments.

Supply support for STM32H7S7I8K6 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 components for industrial, automotive, and consumer markets.

The STM32H7S series targets cost-sensitive, high-performance embedded systems needing advanced security, graphics, and connectivity - specifically optimized for UI-rich industrial controls and automotive edge nodes with FD-CAN and Ethernet.

FAQ

What is the maximum operating frequency of the STM32H7S7I8K6?

The STM32H7S7I8K6 operates at up to 600 MHz using its Arm Cortex-M7 core with double-precision FPU and L1 cache. This frequency is achievable under specified voltage (1.26–1.32 V VCORE) and temperature (–40°C to +105°C) conditions, with external clock sources (HSE or PLL) properly configured per the datasheet's RCC section.

Does STM32H7S7I8K6 support secure boot from external memory?

No - secure boot is restricted to internal flash or system memory. The device enforces root-of-trust boot only from the embedded flash or ROM bootloader; external memories require on-the-fly decryption (via MCE) but cannot serve as trusted boot sources due to lack of hardware signature verification for external code.

How many FD-CAN interfaces does STM32H7S7I8K6 provide, and what data rates do they support?

The STM32H7S7I8K6 integrates two fully independent FD-CAN controllers (FDCAN1 and FDCAN2), each supporting ISO 11898-1 compliant CAN FD operation up to 5 Mbps in data phase and 1 Mbps in arbitration phase, with built-in message RAM, filters, and timestamping.

Is the JPEG codec in STM32H7S7I8K6 capable of both encoding and decoding?

Yes - the dedicated hardware JPEG codec supports full encode and decode operations for baseline JPEG (JFIF) format, including Huffman coding/decoding, quantization, and IDCT. It processes YUV422 and RGB565 inputs, with DMA-driven throughput sufficient for real-time 1080p@30fps compression or decompression.