Extend battery life and protect data in cost-sensitive industrial, medical, and consumer devices with the ultra-low-power STM32U3.
The STM32U3 series offers greater power efficiency in run mode compared to previous product generations. It is the first STM32 based on near-threshold design which drastically reduces the dynamic consumption of the final application. This product represents the market-leader in term of efficiency with 117 Coremark/mW and a static mode < 2 µA.
The series is based on an Arm© Cortex©-M33 core, with extended memory: 256 Kbytes of RAM and 1 Mbyte of dual bank flash. The STM32U3 series supports -40 °C to +105 °C temperature range.
Product types
This product line offers best-in-class low-power consumption and high energy efficiency without compromising costs: it comes in nine packages from 32 to 100 pins, in UFQFPN, WLCSP, LQFP, and UFBGA. The STM32U385xx devices embed several protection mechanisms and cryptography features.
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| Product types | CPU (MHz) | FLASH (KB) | RAM (KB) | ULP Comparators | ULP timers | I3C | Coupling and chaining bridge (CCB) | HUK + PKA | AES 128/256 + S-AES |
| STM32U375 | 96 | 512 to 1024 | 256 | 2 | 4 | 2 | |||
| STM32U385 | 96 | 1024 | 256 | 2 | 4 | 2 | • | • | • |
Applications
Key benefits
Industry-leading energy efficiency
- Greater power efficiency in run mode compared to previous generations
- Near-threshold design drastically reducing dynamic consumption
- Market-leading efficiency with 117 Coremark/mW, (5X more efficient compared to previous product generations)
- Static mode (STOP) < 2 µA
Robust security to safeguard sensitive applications
- PSA Certified L3 & SESIP3 targets
- Key hardware protection provided by the coupling and chaining bridge (CCB) HAL
- In-factory provisioned attestation ensuring product authenticity
- Side-channel resistant hardware protection
- Ready for Cyber Resilience Act (CRA)
Versatile peripheral offering without compromising cost efficiency
- Built on 40 nm platform
- Integrating essential peripherals: I3C (new and updated IP allowing efficient data transfer, real-time event handling, error detection) and FDCAN IP (low-latency communication, large data transfer)
- Enabling a simple PCB design
Discover our development tools and software for STM32U3 series
Extend battery life and protect data in cost-sensitive industrial, medical, and consumer devices with the ultra-low-power STM32U3.
The STM32U3 series offers greater power efficiency in run mode compared to previous product generations. It is the first STM32 based on near-threshold design which drastically reduces the dynamic consumption of the final application. This product represents the market-leader in term of efficiency with 117 Coremark/mW and a static mode < 2 µA. It also integrates ST’s innovative hardware signal processing (HSP) technology, which accelerates digital signal processing (DSP) and edge AI tasks while drastically improving power efficiency.
The series is based on an Arm© Cortex©-M33 core, with extended memory: up to 640 Kbytes of RAM and up to 2 Mbyte of dual bank flash. The STM32U3 series supports -40 °C to +105 °C temperature range and offers a wide variety of packages from 32 up to 144 pins, in UFQFPN, WLCSP, LQFP, and UFBGA.
Product types
This product line offers best-in-class low-power consumption and high energy efficiency without compromising costs: it comes in nine packages from 32 to 100 pins, in UFQFPN, WLCSP, LQFP, and UFBGA. The STM32U385xx devices embed several protection mechanisms and cryptography features.
This product line integrates ST’s innovative hardware signal processing (HSP) technology, which accelerates digital signal processing (DSP) and edge AI tasks while drastically improving power efficiency. The STM32U3C5xx devices also embed several protection mechanisms and cryptography features.
Discover our product offering
| Product types | CPU (MHz) | FLASH (KB) | RAM (KB) | ULP Comparators | ULP timers | I3C | Coupling and chaining bridge (CCB) | HUK + PKA | AES 128/256 + S-AES | DSP/AI acceleration |
| STM32U375 | 96 | 512 to 1024 | 256 | 2 | 4 | 2 | No | |||
| STM32U385 | 96 | 1024 | 256 | 2 | 4 | 2 | • | • | • | No |
| STM32U3B5 | 96 | 1024 to 2048 | 640 | 2 | 4 | 2 | • | • | • | Yes |
| STM32U3C5 | 96 | 2048 | 640 | 2 | 4 | 2 | • | • | • | Yes |
Applications
Key benefits
Industry-leading energy efficiency
- Greater power efficiency in run mode compared to previous generations
- Near-threshold design drastically reducing dynamic consumption
- Hardware signal processing (HSP) technology accelerating digital signal processing (DSP) and edge AI tasks
- Market-leading efficiency with 117 Coremark/mW, (5X more efficient compared to previous product generations)
- Static mode (STOP) < 2 µA
Robust security to safeguard sensitive applications
- PSA Certified L3 & SESIP3 targets
- Key hardware protection provided by the coupling and chaining bridge (CCB) HAL
- In-factory provisioned attestation ensuring product authenticity
- Side-channel resistant hardware protection
- Ready for Cyber Resilience Act (CRA)
Versatile peripheral offering without compromising cost efficiency
- Built on 40 nm platform
- Integrating essential peripherals: I3C (new and updated IP allowing efficient data transfer, real-time event handling, error detection) and FDCAN IP (low-latency communication, large data transfer)
- Enabling a simple PCB design
Discover our development tools and software for STM32U3 series
Featured Videos
One number sums up the efficiency of the STM32U3: at 117 Coremark/mW, it breaks the 100 symbolic threshold, literally making it a new benchmark in the industry.