STMicroelectronics STM32H533VEI6

Overview

STM32H533VEI6 from STMicroelectronics is an Arm® Cortex®-M33 32-bit microcontroller with TrustZone® security, FPU, and 250 MHz max clock frequency. It integrates 512 Kbytes of ECC-protected flash (dual-bank read-while-write), 272 Kbytes of SRAM (80 Kbytes with ECC), dual 12-bit ADCs (5 Msps), two AES coprocessors (one DPA-resistant), and hardware-based secure boot via ST-iROT. It targets secure industrial edge nodes requiring real-time control, encrypted firmware updates, and tamper-aware operation.

For engineers reviewing the STM32H533VEI6 datasheet, STM32H533VEI6 pinout, STM32H533VEI6 application, or STM32H533VEI6 equivalent, key selection criteria include TrustZone-enforced peripheral isolation, Octo-SPI on-the-fly decryption support, PSA Level 3/SESIP3 certification, and dual DMA controllers for offloading cryptographic operations in low-power modes.

Technical Context

The STM32H533VEI6 implements a dual-domain Armv8-M architecture: Secure and Non-secure worlds are enforced by TrustZone®, with up to eight configurable SAU regions and securable peripherals including GPIO, timers, and communication interfaces. Its GTZC (Global TrustZone Controller) manages memory and peripheral access rights at runtime.

It features two independent DMA controllers supporting secure/non-secure channel arbitration, ART Accelerator with 8-Kbyte instruction cache and 4-Kbyte data cache for zero-wait-state execution, and hardware accelerators for AES, PKA, HASH (SHA-1/2/3), and true random number generation (NIST SP800-90B compliant).

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch), 100-pin quad flat pack with exposed thermal pad; RoHS-compliant ECOPACK2 finish; operating junction temperature range: –40 °C to +125 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H533VEI6, the STM32H563VIT6 offers greater memory headroom but sacrifices LQFP100 availability and increases layout complexity, while the i.MX RT685 shifts security responsibility to external components and software layers - making the STM32H533VEI6 optimal for compact, self-contained, PSA-certified industrial endpoints.

Availability

STM32H533VEI6 is available at Aetrix Electronics and suitable for industrial PLC edge nodes, secure smart meters, medical handheld diagnostics, and automotive body control modules requiring stable component supply across extended product lifecycles.

Supply support for STM32H533VEI6 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 focus on industrial and embedded security.

The STM32H5 series is designed for high-assurance embedded systems demanding PSA Level 3/SESIP3 certification, hardware-rooted trust, and real-time performance in harsh environments - targeting industrial automation, energy infrastructure, and medical devices.

FAQ

What is the maximum operating temperature for STM32H533VEI6 in LQFP100 package?

The STM32H533VEI6 in LQFP100 package is rated for junction temperature from –40 °C to +125 °C. Thermal performance depends on PCB copper area, airflow, and VDD/VDDA loading; ST recommends ≥ 4 cm² of 2-oz copper pour under the thermal pad for sustained 125 °C operation.

Does STM32H533VEI6 support secure boot from external Octo-SPI memory?

Yes - the on-the-fly decryption engine (OTFDEC) enables authenticated and decrypted code execution directly from external Octo-SPI NOR/PSRAM, using AES-128/256 keys stored in secure memory. Boot ROM verifies the initial image hash before enabling OTFDEC for subsequent fetches.

How many independent clock sources does STM32H533VEI6 integrate?

It integrates six internal oscillators (64 MHz HSI, 48 MHz HSI48, 4 MHz CSI, 32 kHz LSI, plus two programmable PLLs) and supports two external crystals (4–50 MHz HSE and 32.768 kHz LSE). All clock trees are TrustZone-aware with secure configuration registers.

Can the 12-bit ADCs operate simultaneously with full 5 Msps aggregate throughput?

No - each 12-bit ADC achieves up to 5 Msps individually, but simultaneous sampling on both ADCs reduces effective throughput per channel due to shared bus arbitration and conversion pipeline constraints. Maximum combined throughput is 7 Msps under interleaved mode with synchronized triggers.