New ultra-low power MCUs
Leading the market in power efficiency
Leading the market in power efficiency
The STM32U3 series enables more efficient battery-powered applications, thanks to its innovative near-threshold design, which allows it to operate at significantly lower voltages, reducing both dynamic and static power consumption.
Extend your battery life and enhance energy efficiency, making devices ideal for applications where energy is critical.
Key benefits
Extended battery life
Reduce dynamic power consumption with near-threshold technology and lower energy usage through optimized duty cycles.
Cost-effective design
Simplify PCB design, reduce costs with diverse packages, and leverage a robust development ecosystem for a fast time to market.
Enhanced security
Secure cryptographic keys with hardware protection. Ensure product authenticity with in-factory attestation and enhanced security mechanisms.
Key features
- Arm Cortex-M33 core with FPU
- 256 Kbytes RAM and 1 Mbytes flash dual bank
- Multiple communication interfaces (I3C, FDCAN, SPI, UART)
- 117 Coremark/mW and 10 µA/MHz
- Near-threshold technology
- Extended temperature support (-40°C to +85°C and +105°C)
- TrustZone® technology
- PSA Certified L3 & SESIP3 targets
Applications
Industrial IOT
Smoke detectors, door locks, asset tracker and sensors
Smart metering
Thermostats and heat cost allocators
Medical
Insulin pumps and glucose meters
Consumer
Activity trackers, GPS, and e-cigarettes
Get started
$24.11 | unit
Nucleo with USB Type-C
Leverage extensive memory and a rich set of peripherals to support a wide range of applications, from industrial to consumer electronics.
Free embedded software
Simplify application development and debugging
Ensure your application’s performance with the robust debugging capabilities of the STM32CubeU3.
STM32 Explore | On-demand webinar
Discover new STM32U3 MCUs with market-leading power efficiency