STMicroelectronics STM32H533VET6

Overview

STM32H533VET6 from STMicroelectronics is a 32-bit Arm® Cortex®-M33 microcontroller with TrustZone® security, FPU, and 250 MHz max clock frequency. It integrates 512 Kbytes of ECC-protected flash, 272 Kbytes of SRAM (including 80-Kbyte ECC-secured SRAM2), and hardware cryptographic accelerators (AES, PKA, HASH, RNG). It targets secure industrial control, IoT edge nodes, and smart metering where real-time performance, tamper resistance, and firmware integrity are critical.

For engineers reviewing the STM32H533VET6 datasheet, STM32H533VET6 pinout, STM32H533VET6 application, or STM32H533VET6 equivalent, key selection criteria include TrustZone-enforced peripheral isolation, dual-bank read-while-write flash for safe OTA updates, 112 GPIOs with 5 V tolerance, Octo-SPI on-the-fly decryption, and PSA Level 3/SESIP3 certification for secure boot and firmware installation.

Technical Context

The STM32H533VET6 implements Armv8-M mainline security with configurable SAU regions and ST-iROT (immutable root of trust) enabling hardware-enforced secure boot and runtime isolation. Its dual GPDMA controllers offload CPU for concurrent data movement across peripherals including Octo-SPI, SDMMC, and USB.

It features two independent 12-bit ADCs (5 Msps), one dual-channel 12-bit DAC, and dedicated analog blocks (VREFBUF, DTS, temperature sensor) co-located with TrustZone-aware power management-supporting Stop mode operation with low-power timers and RTC backup registers retained via VBAT.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads. Pin functions validated per DS14539 Rev 3 Section 4.2 (Pin description) and Table 14 (STM32H533xx pin/ball definition).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H533VET6, the STM32H563VIT6 adds Ethernet and USB HS at higher cost and power, while the LPC55S69 lacks PSA Level 3, OTFDEC, and dual-bank flash-making STM32H533VET6 the only option meeting strict industrial and medical security mandates with minimal resource overhead.

Availability

STM32H533VET6 is available at Aetrix Electronics and suitable for industrial PLC edge nodes, smart energy meters, secure IoT gateways, and medical sensor hubs requiring stable component supply, long-term lifecycle support, and certified security features.

Supply support for STM32H533VET6 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.

The STM32H5 series is designed for high-assurance embedded applications demanding hardware-enforced security, real-time determinism, and cryptographic agility-targeting industrial automation, smart infrastructure, and regulated medical devices.

FAQ

What security certifications does the STM32H533VET6 hold?

The STM32H533VET6 is certified to PSA Certified Level 3 and SESIP3 (Security Evaluation Standard for IoT Platforms). These validate its secure boot implementation, TrustZone configuration, cryptographic acceleration, and secure firmware installation (SFI) against defined threat models-including physical tampering, side-channel attacks, and firmware rollback.

Does the STM32H533VET6 support external memory with hardware decryption?

Yes-it integrates an On-the-Fly Decryption Engine (OTFDEC) that transparently decrypts data from Octo-SPI-connected external memories (NOR/NAND/PSRAM) using AES-128/256 keys stored in secure memory. This eliminates software decryption overhead and prevents plaintext exposure in RAM.

How many GPIOs are available, and what voltage levels do they support?

The STM32H533VET6 provides up to 112 fast I/Os in LQFP100 packaging. Most are 5 V-tolerant on 3.3 V supply; ten pins (VDDIO2 domain) support independent supply down to 1.08 V, enabling direct interface with ultra-low-voltage sensors and logic without level shifters.

What development tools are officially supported for secure firmware deployment?

ST provides STM32CubeProgrammer with SFI (Secure Firmware Installation) support, STM32H5 Discovery kits (e.g., STM32H573I-DK), and TF-M (Trusted Firmware-M) porting guides. Secure debug requires authenticated SWD/JTAG sessions enabled via ST-iROT, and production programming uses ST's secure provisioning workflow with certificate-based key injection.