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Low Power MCUs Boast Advanced Performance and Security

STMicroelectronics (ST) has announced its STM32U5 series of MCUs designed for the demanding power/performance requirements for smart applications including wearables, personal medical devices, home automation and industrial sensors. The STM32 MCUs, built upon the highly energy-efficient Arm Cortex-M processors, are already in billions of domestic appliances, industrial controls, computer peripherals, communication devices and equipment managing smart cities and infrastructure, says ST.

The new STM32U5 series teams the efficient Arm Cortex-M33 core with ST’s proprietary power-saving features and on-chip IP cutting down energy demand while pumping up performance. The line also adds new state-of-the-art features needed by today’s applications, including advanced cybersecurity with new hardware-based protection targeting PSA and SESIP (Security Evaluation Standard for IoT Platforms) assurance level 3, as well as graphics accelerators for rich user experiences.

ST has also created the STM32U5 IoT Discovery Kit (B-U585I-IOT02A) that combines the MCU with a Wi-Fi module, Bluetooth module and various sensors. Microsoft has chosen this kit as reference board for the new Azure Certified Device program.

Building on the cybersecurity focus of the STM32L5, which includes a Cortex-M33 core with Arm TrustZone technology and an ST-specific security feature set, the STM32U5 series introduces new and state-of-the-art innovations:

  • AES encryption and Public Key Authorization (PKA) are now hardware resistant to side-channel attacks by Differential Power Analysis (DPA)
  • Secure data storage with a Hardware Unique Key (HUK)
  • Active tamper detection
  • Internal monitoring that can erase secret data in the event of perturbation attacks helps meet the PCI Security Standards Council (PCI SSC) requirements for Point Of Sales (POS) applications.
  • New Ecosystem Resources
  • Azure RTOS will be integrated in the STM32Cube software suite, with configuration features in STM32CubeMX and STM32CubeIDE tools and addition of examples, bringing additional key benefits to STM32Cube such as fast performance and industry certifications.

STM32U5 MCUs are sampling now to lead customers and will be in full production in September 2021. Budgetary pricing starts at $3.60. A broad choice of packages including a 4.2mm x 3.95mm WLCSP and 7mm x 7mm UQFN48 and UFBGA169 will be available.

STMicroelectronics |

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Low Power MCUs Boast Advanced Performance and Security

by Circuit Cellar Staff time to read: 1 min