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 (32-bit 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 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 442 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.
As part of our embedded online event, we had the pleasure of filming with Reinhard Keil, a Senior Director of Embedded Tools at ARM.
This video is about the STM32L5, our recently announced ultra-low power microcontroller bringing a new security dimension. The STM32L5 is now in full production and all its ecosystem is available including hardware kits, software tools, firmware and all documentations of course. This is our first STM32 based on Cortex-M33 and its Trustzone and using specific ST security implementation - watch the video to find out more!
The STM32L5 is based on Arm® Cortex-M33 and TrustZone® technology combined with STMicroelectronics security implementation. On your STM32L562E-DK discovery board, TrustZone is disabled (factory setting) and you can develop as on any other STM32 device. This video shows how to enable TrustZone on STM32L562E-DK discovery using STM32CubeProgrammer and create, compile and debug or run a new project with STM32CubeIDE. It also shows how to open an example project delivered in STM32CubeL5 MCU Package, modify, compile and debug or run it. For further information, you can refer to AN5394 and AN5424 application notes.
Discover our latest STM32 ultra-low-power MCUs
- The new STM32L0x0 Value line incorporates the efficient 32-bit Arm® Cortex®-M0+ core operating at 32 MHz, embedded memories (128 Kbytes of Flash program memory, 512 bytes of data EEPROM and 20 Kbytes of RAM). This STM32L0x0 Value line provides high power efficiency over a wide performance range. This is achieved with a large choice of internal and external clock sources, internal voltage adaptation, and several lowpower modes.
- The new STM32L412 (no crypto) and STM32L422 (with crypto) devices extend the STM32L4 series with Flash density from 128 to 64 Kbytes. Ideal for cost-sensitive applications, low-pin-count-packages choices range from 32-pin LQFP (5x5mm) to 64-pin BGA (5x5mm) including 36-pin WLCSP (2.58x3.07 mm). Developers will appreciate the slim-form-factor NUCLEO-L412KB board and NUCLEO-L412RB-P including a step down converter.
- The new STM32L4P5/Q5 MCUs bring additional options to the STM32L4+ series, delivering lower Flash-density devices from 512 Kbytes to 1 Mbyte and 1 Mbyte respectively. Ideal for cost-sensitive applications, these microcontrollers come in low-pin packages ranging from 48-pin QFN (7x7mm) to 169-pin BGA (7x7mm). Development tools including the 144-pin NUCLEO-L4P5ZG board and the STM32L4P5G-DK discovery kit are available.