STMicro STM32H5 Arm Cortex-M33 MCU clocks at 250 MHz, supports STM32Trust TEE Secure Manager

STMicroelectronics has announced the STM32H5 Arm Cortex-M33 “high-performance” microcontroller family clocked at up to 250 MHz and supporting STM32Trust TEE Secure Manager to boost both performance and security in “next-generation smart applications”.

The STM32H5 family has three product types namely the higher-end STM32H563/573 with up to 2MB flash, 640KB SRAM, Ethernet, and hardware security, the STM32H562 with a similar design but fewer interfaces, and the entry-level STM32H502 with 128KB flash, 32KB SRAM.

STM32H5 key features and specifications:

• MCU core – Arm Cortex-M33 core with TrustZone technology, digital signal processing (DSP) and floating-point unit (FPU) running up to 250 MHz; Up to  375 DMIPS and a 1023 CoreMark score executing from the flash memory
• Memory and Storage
  • STM32H563/573/562 – 1 to 2 Mbytes of flash memory, 640 Kbytes of SRAM
  • STM32H503 – 128 Kbytes of flash memory and 32 Kbytes of RAM.
  • OSPI serial flash memory interface
  • Up to 2x SDMMC FMC interfaces
• Camera interface (except for STM32H503)
• Networking – 10/100M Ethernet MAC (STM32H563/573 devices only)
• USB – USB 2.0 full-speed host and device, USB Type-C with USB Power Delivery support
• Embedded peripherals
  • I3C interface
  • Up to 2x CAN-FD interfaces
  • Up to 2x 12-bit ADC (5Msps)
  • Multiple 16- and 32-bit timers
• Additional Security on STM32H573 only
  • Secure Manager with secure trusted execution environment (TEE) software
  • Compatible with TF-M PSA APIs
  • Target SESIP and PSA certification Level 3
  • TRNG FIPS SP800-90B compliant, target CMVP entropy validation certification
  • Secure Key storage with hardware unique key (HUK)
  • Secure firmware install (SFI) to authenticate and protect software IP during initial programming
  • Debug access controlled by ECDSA-P256 authentication
  • ST-iRoT – Pre-configured immutable root of trust, with secure boot, firmware update, serial loader, and secure debug mechanisms
• Power efficiency (for STM32H563/573 for reference as other parts have different efficiency numbers)
  • Embedded switched-mode power supply (SMPS) to scale down the supply voltage.
  • 61 µA/MHz typical at V_DD = 3.3 V (drain power voltage) and 25°C in run mode (peripherals off) with SMPS option
  • 51 µA typically in stop mode with full RAM retention (low-power mode)
  • 3.5 µA typically in standby mode (low-power mode)
  • 776 nA typically in V_BAT (battery voltage mode) with RTC (low-power mode)
• Package – WLCSP25 to LQFP176/UFBGA176

Only five parts are available right now namely the STM32H503RB, STM32H563VI, STM32H563ZI, STM32H563AI, and STM32H563II, and other devices are expected for the end of Q2 2023.

STMicro explains the STM32H5 is the first MCU series with ProvenRun’s ProvenCore-M system-on-chip (SoC) security services accessed via an industry-standard API, called the STM32Trust TEE Secure Manager, which aims to simplify development and provide security services according to known best practices. The STM32H5 MCUs are also SIL-ready for products that must meet an appropriate safety integrity level (SIL).

The company also highlights the efficiency of the STM32H5 MCUs achieves through the use of advanced 40nm CMOS process technology and enhanced on-chip power-conversion circuits, meaning the MCU can run at 250MHz even in harsh environments where the ambient temperature can reach up to 125°C.

Three development kits are made available with the NUCLEO-H503RB for $15, NUCLEO-H563ZI for $29, and STM32H573I-DK for $99. All can be programmed with the usual STM32Cube development ecosystem with examples showing how to use the new security services.

Typical applications for the STM32H5 MCUs include air conditioning systems, home appliances, alarm systems, industrial PLCs, motor controls, industrial pumps, communication gateways, lighting controls, and energy conversion, as well as consumer products such as PC peripherals, smartphones accessories, and so on.

Pricing will start at $1.44 per unit for 10k orders for the UFQFPN32 package with 128KB Flash (STM32H503), and devices with 2MB Flash size will be priced at $2.93 and up. Mass production is beginning now for the STM32H503 and STM32H563, but most parts will only become broadly available in June. Additional information may be found on the product page.

Jean-Luc Aufranc (CNXSoft)

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.

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