STMicroelectronics STM32H573IIK6TR

Overview

STM32H573IIK6TR from STMicroelectronics is a high-security, high-performance Arm® Cortex®-M33 32-bit microcontroller with TrustZone®, FPU, and 250 MHz operation delivering 375 DMIPS. It integrates 2-Mbyte ECC-protected flash (dual-bank read-while-write), 640-Kbyte SRAM (including ECC-enabled SRAM2/SRAM3), cryptographic accelerators (AES, PKA, HASH, RNG), and Octo-SPI with on-the-fly decryption. It targets secure industrial control, IoT edge nodes, and trusted firmware execution environments.

For engineers reviewing the STM32H573IIK6TR datasheet, STM32H573IIK6TR pinout, STM32H573IIK6TR application, or STM32H573IIK6TR equivalent, key selection criteria include TrustZone-enforced peripheral isolation, dual-bank flash for robust OTA updates, hardware-accelerated crypto (SAES + PKA), 24 timers including six low-power variants, and support for external memory via FMC and Octo-SPI - all in a compact WLCSP80 package.

Technical Context

The STM32H573IIK6TR implements Armv8-M mainline security with configurable SAU regions and preconfigured immutable root of trust (ST-iROT). Its dual-core-aware GPDMA controllers offload CPU during high-throughput data movement between peripherals and memory-mapped resources like Octo-SPI or FMC.

Security is enforced at silicon level: secure debug authentication, secure firmware installation (SFI), tamper detection, and hardware unique key (HUK) for secure data storage. The ART Accelerator includes 8-Kbyte instruction cache and 4-Kbyte data cache to sustain zero-wait-state execution from flash and external memories while maintaining deterministic timing under TrustZone partitioning.

Key Specifications

Pinout & Package

STM32H573IIK6TR uses a WLCSP80 (3.50 × 3.27 mm) package with 80-ball array, optimized for space-constrained secure edge devices. Ball pitch is 0.4 mm, and the package supports solder reflow per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H573IIK6TR, the STM32H753IIK6 trades security certification and hardware-enforced isolation for higher clock speed, while the i.MX RT1176AVM8B offers dual-core flexibility at the cost of verified PSA compliance and seamless OTFDEC integration - making the H573 the only choice for standards-driven secure edge deployments.

Availability

STM32H573IIK6TR is available at Aetrix Electronics and suitable for industrial PLC edge nodes, secure IoT gateways, medical wearable hubs, and smart energy meters requiring stable component supply and long-term lifecycle support.

Supply support for STM32H573IIK6TR 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 ST's flagship secure MCU line designed for PSA-certified, TrustZone-based embedded systems demanding hardware-rooted security, cryptographic acceleration, and robust firmware update resilience in industrial and connected-edge applications.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating?

The STM32H573IIK6TR operates at up to 250 MHz and delivers 375 DMIPS (Dhrystone 2.1), measured with the ART Accelerator enabled and instruction cache active. This performance is sustained across voltage ranges (1.71–3.6 V) and ambient temperatures (–40°C to +125°C), validated per DS14121 Rev 5 Section 5.3.1.

Does this part support secure firmware updates over-the-air (OTA)?

Yes - it supports secure OTA via its dual-bank flash architecture, SFI (Secure Firmware Installation), and OTFDEC. Firmware images are cryptographically signed and verified during boot; new images can be written to the inactive bank while the system runs from the active bank, enabling atomic, rollback-safe updates without external intervention.

What external memory interfaces are available and what are their key constraints?

The part provides a Flexible Memory Controller (FMC) supporting SRAM, PSRAM, SDRAM/LPSDR, FRAM, and NOR/NAND, plus an Octo-SPI interface with on-the-fly decryption. FMC supports up to 16-bit data bus width and asynchronous/synchronous protocols; Octo-SPI supports x8/x4/x1 modes with up to 133 MHz clock and hardware decryption keys stored in secure OTP.

Is the WLCSP80 package RoHS and REACH compliant?

Yes - the STM32H573IIK6TR in WLCSP80 packaging is ECOPACK2 compliant, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead-free solderability is guaranteed per JEDEC J-STD-020, and the package uses halogen-free molding compound as specified in ST's quality documentation DS14121.