STMicroelectronics STM32H7S3R8V6

Overview

STM32H7S3R8V6 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, 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 multimedia interfaces - such as industrial HMIs, edge AI gateways, and secure IoT edge nodes.

For engineers reviewing the STM32H7S3R8V6 datasheet, STM32H7S3R8V6 pinout, STM32H7S3R8V6 application, or STM32H7S3R8V6 equivalent, key selection considerations include its 600 MHz M7 core with L1 cache, PSA Level 2/SESIP Level 3 security certification, dual 12-bit ADCs (5 MSPS), octo-SPI/XiP support up to 200 MHz, and VFQFPN68 package with 68 pins and 10 × 10 mm footprint.

Technical Context

The STM32H7S3R8V6 integrates a dual-bank Arm Cortex-M7 CPU with MPU, DP-FPU, and 32+32 KB L1 instruction/data caches enabling zero-wait-state execution. Its memory subsystem includes TCM RAM (64+64 KB), 384 KB AXI SRAM, 4 KB backup SRAM, and flexible external memory controllers supporting SDRAM, NOR/NAND, and HyperRAM™.

Security architecture features embedded root secure services (RSS), secure firmware installation/update (SFI/SFU), hardware unique key (HUK), two DPA-resistant AES coprocessors, PKA for ECC verification, and on-the-fly encryption of serial/parallel external memories - all validated under PSA Level 2 and SESIP Level 3 certification.

Key Specifications

Pinout & Package

VFQFPN68 (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad. Designed for high-density PCB layouts and efficient thermal dissipation in fanless industrial enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H7S3R8V6, the H743VI offers more memory but lacks security certification and graphics IP; the H753VI adds TrustZone but omits FD-CAN and GPU2D - making the H7S3R8V6 uniquely balanced for secure, display-rich, automotive-adjacent edge applications.

Availability

STM32H7S3R8V6 is available at Aetrix Electronics and suitable for industrial HMIs, secure edge gateways, AI inference nodes, and automotive diagnostic tools requiring stable component supply across multi-year production cycles.

Supply support for STM32H7S3R8V6 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 management ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time performance, advanced security, and rich peripheral integration - with the H7S subfamily optimized for certified security, graphics acceleration, and compact form factors like VFQFPN68.

FAQ

What is the maximum operating frequency and supported voltage range for STM32H7S3R8V6?

The STM32H7S3R8V6 operates at up to 600 MHz using its Arm Cortex-M7 core. Its application supply voltage range is 1.71 V to 3.6 V for both core and I/O domains. The internal SMPS or LDO regulates VCORE to 1.2 V, and external VCAP capacitors (2.2 µF each) are mandatory for stable high-frequency operation per Section 6.3.2 of DS14359 Rev 7.

Does STM32H7S3R8V6 support secure boot and firmware updates out of the box?

Yes - it includes embedded root secure services (RSS) enabling secure firmware installation (SFI) and secure firmware update (SFU). Boot authentication uses certificate- or password-based debug reopening, and the secure hide protection area (HDP) enforces immutable boot entry. PSA Level 2 and SESIP Level 3 certification (under validation) confirms compliance with secure boot and update requirements.

Which graphics interfaces and display resolutions does STM32H7S3R8V6 support?

The device integrates an LCD-TFT controller supporting up to XGA (1024×768) resolution, plus a NeoChrom GPU2D for 2D graphics acceleration (rotation, scaling, perspective-correct texture mapping) and Chrom-ART DMA2D for graphic content composition. It also includes a hardware JPEG codec and flexible memory controller (FMC8/16) for parallel display interfaces.

What are the key differences between STM32H7S3R8V6 and STM32H743VI in terms of security and peripherals?

The STM32H7S3R8V6 features PSA Level 2/SESIP Level 3 certification, dual FD-CAN, NeoChrom GPU2D, and octo-SPI with XiP - while the H743VI lacks formal security certification, uses classical CAN, has no GPU2D, and supports only quad-SPI. The H7S3R8V6's VFQFPN68 package is smaller than H743VI's LQFP100, and its 64 KB flash targets compact secure firmware deployments.