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STMicroelectronics STM32U5 Ultra-Low-Power MCUs

STM32U575 and STM32U585, 1st STM32U5 Now Available, Try LPBAM on our 3 Development

The STMicroelectronics STM32U5 series offers advanced power-saving microcontrollers, based on Arm® Cortex®-M33 to meet the most demanding power/performance requirements for smart applications, including wearables, personal medical devices, home automation, and industrial sensors.

Offering up to 2 Mbytes of Flash (dual bank) memory and 786 Kbytes of SRAM, the STM32U5 series of microcontrollers takes performance to the next level.

The STM32U5 MCUs offer a large portfolio with 8 packages (from 48 to 169 pins) and supports up to 125°C ambient temperature.

Best-in-Class Power Consumption

  • Energy benchmark:
    • 535 ULPMark-CP
    • 149 ULPMark-PP
    • 58 ULPMark-CM
    • 133,000 SecureMark-TLS
  • LPBAM (Low Power Background Autonomous Mode), an innovative autonomous power mode, with peripherals and DMA working in stop mode


  • Key performance indicators include:
    • 110 nA in shutdown mode
    • 300 nA in standby mode
    • 1.7 µA in stop mode 3 with 16 Kbytes of SRAM
    • 6.6 µA in stop mode 2 with 786 Kbytes of SRAM
    • Down to 19 µA/MHz in active mode

Enhanced Security

  • Arm’s TrustZone® technology
  • AES encryption and Public Key Accelerator (PKA) side-channel hardware-resistant
  • Secure data storage with a Hardware Unique Key (HUK)
  • Active tamper detection
  • PSA and SESIP level 3 certified

Enhanced Performance

  • Arm Cortex-M33 running at 160 MHz
  • 240 DMIPS and 651 CoreMark scores
  • Mathematic accelerators FMAC and Cordic



STM32U585 Block Diagram


B-U585I-IOT02A Discovery Kit

For IoT node with STM32U5 Series

The B-U585I-IOT02A Discovery kit provides a complete demonstration and development platform for theSTM32U585AI microcontroller, featuring an Arm® Cortex®‑M33 core with Arm® TrustZone® and Armv8-M mainline security extension, 2 Mbytes of Flash memory and 786 Kbytes of SRAM, as well as smart peripheral resources.

STMicroelectronics – B-U585I-IOT02A Discovery Kit for IoT node with STM32U5
B-U585I-IOT02A Data Brief

Key Features:

  • Ultra-low-power STM32U585AII6Q microcontroller based on the Arm® Cortex®‑M33 core with Arm® TrustZone®, 2 Mbytes of Flash memory and 786 Kbytes of SRAM, and SMPS in UFBGA169 package
  • 512‑Mbit octal-SPI Flash memory, 64‑Mbit octal-SPI PSRAM, 256‑Kbit I2C EEPROM
  • USB FS, Sink and Source power, 2.5 W power capability
  • 802.11 b/g/n compliant Wi‑Fi® module from MXCHIP
  • Bluetooth® Low Energy from STMicroelectronics
  • MEMS sensors from STMicroelectronics


STM32U575I-EV Evaluation Board with STM32U575AI MCU

The STM32U575I-EV Evaluation board is designed as a complete demonstration and development platform for the STMicroelectronics Arm® Cortex®-M33 core‑based microcontroller with Arm® TrustZone® and the Armv8-M mainline security extension.

STMicroelectronics – STM32U575I-EV Evaluation board with STM32U575AI MCU
STM32U575I-EV Evaluation Board Data Brief

Key Features:

  • STM32U575AII6Q Arm® Cortex®-M33 core-based microcontroller including Arm® TrustZone® with 2 Mbytes of Flash memory, 786 Kbytes of SRAM, and an embedded SMPS in a UFBGA169 package
  • 2.8” 240x320 pixel-262K color parallel port TFT LCD touch panel module
  • CMOS camera QSXGA 5 megapixels
  • USB Type-C® FS, Sink and Source power capability 5 V / 500 mA
  • SAI audio codec
  • ST-MEMS digital microphone
  • ST-MEMS 3D accelerometer and 3D gyroscope sensor
  • Light-dependent resistor (LDR) and potentiometer for ADC
  • 512-Mbit Octo-SPI Flash, 16-Mbit SRAM, 128-Kbit I2C EEPROM
  • Power-metering demonstration with dual‑channel sigma‑delta modulator


STM32 Nucleo-144 Board

The STM32 Nucleo-144 board provides an affordable and flexible way for users to try out new concepts and build prototypes by choosing from the various combinations of performance and power consumption features, provided by the STM32 microcontroller. For the compatible boards, the internal or external SMPS significantly reduces power consumption in Run mode.

STMicroelectronics – STM32 Nucleo-144 Board NUCLEO-U575ZI-Q
STM32 Nucleo-144 Board Data Brief

Common Features:

  • STM32 microcontroller in LQFP144 package
  • 3 user LEDs
  • 2 user and reset push-buttons
  • 32.768 kHz crystal oscillator
  • Board connectors:
    • SWD
    • ST Zio expansion connector including ARDUINO® Uno V3
    • ST morpho expansion connector
  • Flexible power-supply options: ST-LINK, USB VBUS, or external sources
  • On-board ST-LINK debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port
  • Comprehensive free software libraries and examples available with the STM32Cube MCU Package
  • Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded Workbench®, MDK-ARM, and STM32CubeIDE