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STM32U5: Ultra-Low-Power MCU with High performance

ST’s ultra-low-power MCU platform STM32U5 is based on proprietary ultra-low-leakage technology and optimized design. This allows running the MCU on battery without compromising on the high-performance needs.

The STM32U5 series is based on Arm Cortex-M33 core and ST’s lowest power-consuming MCU which can be widely used in all battery-powered applications including wearables, personal medical devices, home automation, and industrial sensors.

It is probably the 2nd lowest power-consuming MCU after Ambiq Micro (4uA / Mhz) which is still leading the world in low-power consumption.

STM32U5 features

Flash, RAM Size, MCU Frequency

STM32U5 MCU family offers up to 2 Mbytes of Flash (dual bank) memory and 786 Kbytes of SRAM and MCU frequency up to 160Mhz.

MCU is available in eight different packages (LQFP48, QFN48, LQFP64, WLCSP90, LQFP100, UFBGA132, LQFP144, and UFBGA169) and supports up to 125°C ambient temperature.

Power Consumption

Enhanced security

Building on the cyber security features of the STM32L5 MCU, with its Arm Cortex-M33 core that incorporates Arm’s TrustZone® technology and an ST-specific security feature set, the STM32U5 series introduces state-of-the-art innovations:

Integration, size and performance

You can read more details here.

Development Kit (B-U585I-IOT02A)

St-Microelectronics will be launching the development board for that customers can easily evaluate the stm32u5 platform.

Some of the features kit provides are:

Check out development kit product page for more information.


As per ST Micro, the samples are already available to the interested customers and it will be available for the general public by September 2021.

Budgetary price of the MCU will be ~3.6$ based on the features/package.

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