STMicroelectronics STM32H573IIK3QTR

Overview

STM32H573IIK3QTR from STMicroelectronics is a high-security, high-performance Arm® Cortex®-M33 32-bit microcontroller with TrustZone®, FPU, and 250 MHz max clock frequency. It integrates 2 Mbyte flash (with ECC), 640 Kbyte SRAM (including ECC-protected SRAM2/SRAM3), dual AES coprocessors, and on-the-fly Octo-SPI decryption - deployed in secure industrial gateways requiring real-time control, encrypted firmware updates, and hardware-rooted trust.

For engineers reviewing the STM32H573IIK3QTR datasheet, STM32H573IIK3QTR pinout, STM32H573IIK3QTR application, or STM32H573IIK3QTR equivalent, key selection criteria include TrustZone-enforced peripheral isolation, SAES+PKA cryptographic acceleration, 18× 16-bit timers with low-power availability in Stop mode, and dual FDCAN support for deterministic fieldbus communication.

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 secure hide area. Its dual GPDMA controllers offload CPU during concurrent crypto operations and high-bandwidth peripheral transfers.

TrustZone-aware peripherals include the FMC, OCTOSPI (with OTFDEC), RNG (NIST SP800-90B compliant), and GTZC-managed memory regions. The ART Accelerator features 8-Kbyte instruction cache and 4-Kbyte data cache to sustain 375 DMIPS at 250 MHz with zero-wait-state flash execution.

Key Specifications

Pinout & Package

STM32H573IIK3QTR uses a 176-pin LQFP package (24 × 24 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per STMicroelectronics DS14121 Rev 5, Section 4.2 (Pin description).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H573IIK3QTR, the STM32H753IIK6 trades certified security for higher clock speed and lacks hardware crypto offload for secure boot, while the i.MX RT1189 delivers greater compute headroom but requires external secure elements for full PSA Level 3 equivalence - making the H573 optimal for compact, certifiable, single-die secure edge nodes.

Availability

STM32H573IIK3QTR is available at Aetrix Electronics and suitable for industrial PLCs, secure edge gateways, medical diagnostic devices, and smart energy meters requiring stable component supply across long product lifecycles.

Supply support for STM32H573IIK3QTR 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong industrial and security focus.

The STM32H5 series is ST's flagship high-security MCU line designed for PSA Level 3 and SESIP3-certified applications demanding hardware-enforced isolation, secure boot, and on-the-fly encrypted external memory access.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating?

The STM32H573IIK3QTR operates at up to 250 MHz and delivers 375 DMIPS (Dhrystone 2.1) with its Arm Cortex-M33 core. This performance is sustained using the 8-Kbyte instruction cache (ART Accelerator) for zero-wait-state flash execution, confirmed in DS14121 Rev 5 Section 3.2.1 and Table 7.

Does this MCU support hardware-accelerated public-key cryptography?

Yes - it integrates a DPA-resistant Public Key Accelerator (PKA) supporting RSA, ECC, and Diffie-Hellman operations. This enables fast TLS 1.3 handshake completion and secure firmware signature verification without CPU overhead, as detailed in DS14121 Rev 5 Sections 3.34 and 6.10.

How many independent power domains does the STM32H573IIK3QTR support?

It supports three primary voltage domains: VDD/VDDA (1.71–3.6 V core/analog), VDDIO2 (1.65–3.6 V I/O), and VBAT (for RTC and backup registers). Each has dedicated regulators and supervision circuitry, enabling flexible low-power sequencing and domain-specific retention modes per DS14121 Rev 5 Section 3.10.

Is the LQFP176 package RoHS and ECOPACK2 compliant?

Yes - the LQFP176 package (1T variant) used in STM32H573IIK3QTR is ECOPACK2 compliant and fully RoHS-conformant, meeting lead-free soldering requirements and halogen-free material specifications as stated in DS14121 Rev 5 Section 6.8 and ST's official packaging documentation.