New ultra-low power MCUs

STM32U0: unlock design freedom in entry-level, battery-operated devices


The ideal combination between energy consumption, integrated features, and cost​

The ideal combination between energy consumption, integrated features, and cost​

Based on the Arm® Cortex®-M0+ core, the STM32U0 series offers more freedom to optimize design for entry-level, battery-powered applications. It provides high integration, reducing BoM costs and making it an attractive option for cost-conscious customers. ​

Offering 16 to 256 Kbytes of flash memory and 12 to 40 Kbytes of SRAM.

Key benefits

Energy savings​

  • Best-in-class static consumption.​

  • Many ultra-low-power modes for greater flexibility.

High Compatibility​

  • Benefitting from the STM32 development ecosystem

  • Pin-to-pin compatible with several STM32 products

Cost effectiveness

  • Lower BOM costs thanks to high integration.​

  • Attractive price point.

Key features

  • LCD segment display controller
  • Analog : DAC, ADC, OPAMP, COMP
  • Automatic calibrated MSI internal oscillator
  • ART accelerator with dedicated cache
  • AES: 128/256-bit key encryption hardware acceleration
  • Essential security set for firmware code protection (OTP, HDP, WRP, RDP, MPU)
  • Password-based regression (128-bit PSWD)

Suitable for many applications


  • Thermostats
  • Smoke detectors
  • Heat cost allocators
  • Door locks

Smart metering

  • Water
  • Gas
  • Electricity meters
  • Smart home gateways


  • Insulin pumps
  • Glucose meters


  • Activity trackers
  • GPS
  • Headphones

Get started


$10.75 per unit


Speed up evaluation with the highly affordable nucleo board: 256 Kbytes of flash with LQFP package​​.


$20.85 per unit


Enabling ultra-low-power designs and typical use cases​. Comes with 256 Kbytes of flash in LQFP80​.

STM32 Explore | Webinar

Unlock power efficiency and strengthen security with the new STM32U0 MCUs