STM32 Ultra Low Power MCUs

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ST’s ultra-low-power MCU platform is based on a proprietary ultra-low-leakage technology and optimized design.

STM32 ultra-low-power microcontrollers offer designers of energy-efficient embedded systems and applications a balance between performance, power, security and cost effectiveness. The portfolio includes the STM8L (8-bit proprietary core), the STM32L4 (Arm® Cortex®-M4), the STM32L0 (Arm® Cortex®-M0+) and the STM32L1 (Arm® Cortex®-M3). The STM32L5 MCU (Arm® Cortex®-M33) with its enhanced security features is the latest addition to this rich portfolio.

Achieving the industry’s lowest current variation (25 to 125 °C), STM8L/STM32L solutions guarantee outstanding low-current consumption at high temperatures. STM32L1 MCUs also feature the industry's lowest power consumption of 170 nA in low-power mode with SRAM retention. Wake-up times are as low as 3.5 μs from stop mode.

The new STM32U5 series combines the latest and most efficient Arm Cortex-M33 core with an innovative 40 nm platform that reduces energy consumption to the bone, while increasing performance. The series also adds the state-of-the-art features which are required in today’s applications, including advanced cyber security with hardware-based protection, and graphics accelerators for rich graphical user interfaces.

The STM32L5 series enhanced security features leverage Arm® Cortex®-M33 and its TrustZone® for Armv8-M. Thanks to this new core and a new ST ART Accelerator™ (also supporting external memory), the STM32L5 reaches an 443 CoreMark.

The STM32L4 series offers the excellence of ST’s ultra-low power platform with an additional performance dimension by providing 100 DMIPS with DSP instructions and Floating-Point Unit (FPU), more memory (up to 1 Mbyte of Flash memory) and innovative features.

The STM32L4+ series extends STM32L4 technology by offering higher performance (120 MHz/409 CoreMark executing from internal Flash memory), larger embedded memories (up to 2 Mbytes of Flash memory and 640 Kbytes of SRAM), and rendering advanced graphics without compromising ultra-low-power consumption.

The STM32L0 series offers a genuine energy-saving solution for entry-level applications. Available in tiny packages down to 14 pins and with a wide range of Flash memory densities from 8 to 192 Kbytes, the STM32L0 features ultra-low power consumption in a competitive portfolio.

Read more about the benefits of the 32-bit Arm Cortex-M processor for MCUs here.

Understanding the STM32U585 security configurations to fully benefit from SESIP and PSA certifications

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STM32U585 is an open, general-purpose microcontroller offering specific security features that meet PSA Level-3 & SESIP 3 standards. To learn how to use the SESIP / PSA-certified configuration of the STM32U585 and to understand the security functions covered by these certificates, read our dedicated resources that will guide you during your development.