STMicroelectronics STM32H573ZIT3Q

Overview

STM32H573ZIT3Q from STMicroelectronics is a high-security, high-performance Arm® Cortex®-M33 32-bit microcontroller with TrustZone®, FPU, and 250 MHz max clock speed. It integrates 2 Mbyte flash (ECC, dual-bank RWW), 640 Kbyte SRAM (including ECC-enabled SRAM2/SRAM3), cryptographic accelerators (AES, PKA, HASH, RNG), and Octo-SPI with on-the-fly decryption - deployed in secure industrial gateways requiring real-time control, firmware integrity, and encrypted external memory access.

For engineers reviewing the STM32H573ZIT3Q datasheet, STM32H573ZIT3Q pinout, STM32H573ZIT3Q application, or STM32H573ZIT3Q equivalent, key selection criteria include TrustZone-enforced peripheral isolation, dual-bank flash for seamless OTA updates, hardware-accelerated crypto for TLS/secure boot, and 140 I/Os with 5 V tolerance for mixed-voltage system interfacing.

Technical Context

The device implements Armv8-M mainline security with configurable SAU regions and preconfigured immutable root of trust (ST-iROT), enabling secure boot via unique entry point and HDP-protected firmware validation. Its dual GPDMA controllers offload CPU during concurrent crypto operations and high-bandwidth peripheral transfers (e.g., FDCAN + Ethernet MAC + SDMMC).

ART Accelerator includes 8-Kbyte instruction cache and 4-Kbyte data cache, enabling zero-wait-state execution from flash and deterministic performance for real-time tasks. The dual 12-bit ADCs support up to 5 Msps sampling, while CORDIC and FMAC coprocessors accelerate motor control and filtering algorithms without CPU intervention.

Key Specifications

Pinout & Package

STM32H573ZIT3Q uses a 144-pin LQFP package (20 × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per STMicroelectronics DS14121 Rev 5, Section 4.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H573ZIT3Q, the STM32H753ZIT6 omits hardware-enforced security primitives needed for certified secure boot, while the i.MX RT1176 demands external secure provisioning and lacks integrated OTFDEC - making STM32H573ZIT3Q optimal for compact, certified, single-chip secure edge nodes.

Availability

STM32H573ZIT3Q is available at Aetrix Electronics and suitable for industrial gateways, medical IoT hubs, automotive diagnostic tools, and secure edge AI nodes requiring stable component supply across multi-year production cycles.

Supply support for STM32H573ZIT3Q 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 devices for industrial, automotive, and consumer markets.

The STM32H5 series targets high-assurance embedded systems requiring PSA Level 3 and SESIP3 certification, combining Arm TrustZone with ST's patented security IP (ST-iROT, SFI, HDP) for end-to-end firmware and data protection.

FAQ

What is the maximum operating temperature range for STM32H573ZIT3Q?

The STM32H573ZIT3Q is rated for industrial temperature range: –40 °C to +105 °C ambient, verified per DS14121 Rev 5 Section 5.3.1. This rating applies to all LQFP144 packages with JEDEC-standard reflow profiles and proper PCB thermal design.

Does STM32H573ZIT3Q support USB Type-C Power Delivery negotiation?

Yes - it integrates a dedicated UCPD (USB-C Power Delivery) controller compliant with USB PD 3.1 specification. The UCPD peripheral handles BMC signaling, policy engine execution, and VCONN switching without CPU intervention, as confirmed in Section 3.45 of DS14121 Rev 5.

How many independent watchdogs does STM32H573ZIT3Q include?

It includes two independent watchdogs: an Independent Watchdog (IWDG) with ultra-low-power free-running counter and a Window Watchdog (WWDG) with early-warning interrupt capability. Both are TrustZone-aware and can be configured in secure or non-secure worlds per GTZC settings.

Can STM32H573ZIT3Q execute code directly from external Octo-SPI memory?

Yes - with on-the-fly decryption enabled via OTFDEC, the device executes code directly from external Octo-SPI memories (e.g., HyperFlash, serial NOR) while maintaining confidentiality. This is supported in all power modes except Standby, and requires pre-programmed decryption keys in secure memory.