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STM32L0 series of ultra-low-power MCUs

The STM32L0 series is ST’s entry-level range of 32-bit ultra-low-power MCUs designed to achieve an outstandingly low power consumption level. The result is a genuine ultra-low-power MCU with the world’s lowest power consumption at 125 °C.

The exclusive combination of an Arm? Cortex?-M0+ core and STM32 ultra-low-power features, makes the STM32L0 the best fit for applications operating on batteries or supplied by energy harvesting.

To provide the best power efficiency, the STM32L0 offers dynamic voltage scaling, an ultra-low-power clock oscillator and short wakeup time. New autonomous peripherals (including USART, I2C, and touch sense controller) reduce the load of the Arm? Cortex?-M0+ core leading to fewer CPU wakeups and contribute to decreased processing time and power consumption.

To reduce total application BOM cost, the STM32L0 integrates low-power comparators, embedded EEPROM, and a crystal-less USB interface.

Other value-added features such as 16-bit ADC (hardware oversampling), dual-channel DAC, hardware encryption, and communication peripherals capable of operating in ultra-low-power mode make up for an unrivaled tradeoff between feature integration, performance and ultra-low-energy consumption.

STM32L0 MCUs are available with up to 192 Kbytes of Flash memory, 20 Kbytes of RAM and up to 6 Kbytes of embedded true EEPROM (no emulation needed) in 14- to 100-pin packages, including space-saving WLCSP packages.

STM32L0 MCUs have scored 244 in the standardized EEMBC? ULPBench? tests that compare the efficiency of ultra-low-power microcontrollers.

Current consumption reference values:

  • Dynamic run mode: down to 49 μA/MHz (with external DC/DC) and 76 μA/MHz (with LDO)
  • Ultra-low-power mode + full RAM + low power timer: 340 nA (16 wakeup lines)
  • Ultra-low-power mode + backup register: 230 nA (2 wakeup pins)
  • Wake-up time: 3.5 μs

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STM32L0 MCU series: a great and affordable ecosystem

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STM32L5 Series ultra-low power microcontroller with more security
STM32L5 Series ultra-low power microcontroller with more security

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!

How to enable TrustZone<sup>?</sup> and start a project with STM32L5
How to enable TrustZone? and start a project with STM32L5

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.

MadeForSTM32? - the new STM32 quality label
MadeForSTM32? - the new STM32 quality label

MadeForSTM32? is a new quality label delivered by ST, which is granted after an evaluation process. It helps engineers identify third party solutions with the highest level of integration and quality for the STM32 microcontrollers' ecosystem. MadeForSTM32? is offered to members of the ST Partner Program who want to go one step further in our collaboration, with the overall objective of contributing to a high-quality STM32 ecosystem.

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STM32MCU WIKI
discover STM32 MCUs
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STM32L0 MCU series: a great and affordable ecosystem

  • Purchase a 32-pin or 64-pin Nucleo board, Discovery kit or Evaluation kit for STM32L0 MCUs. 
  • Download the Free STM32CubeL0 embedded software package containing the HAL, LL (low-layer) APIs, and middleware. Then install ST’s STM32CubeMX graphical software configuration tool (Free) that supports pinout configuration, code generation and a power consumption calculator. Start with one of the many examples provided or build your own project.
  • To get ultimate optimized library code download the free STM32SnippetsL0 embedded software package.
  • STM32L0 users can now choose from several IDEs from leading vendors and enjoy free license of MDK-ARM-STR Keil environment and also free Eclipse-based IDEs such as Ac6 System Workbench.

STM32L0 Ultra-low-power Wireless Solution

To discover low-power wireless solutions based on the STM32L0, the STM32L0 LoRa? Discovery kit
(B-L072Z-LRWAN1) and the low-power wireless Nucleo pack (P-NUCLEO-LRWAN1) with NUCLEO-L073RZ and LoRa expansion board (I-NUCLEO-SX1272D) are now available.

Learn more about our LoRa solution on LoRaWAN web page.

Part number
Description
Supplier
Licence type
Supported Devices
ST-MCU-FINDER
STM32 and STM8 product finder for mobile devices and desktops
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ST-MCU-FINDER-PC
STM32 and STM8 product finder for desktops
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STM32CubeIDE
Integrated Development Environment for STM32
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STM32CubeMX
STM32Cube initialization code generator
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STM32CubeMonitor
STM32CubeMonitor runtime variable monitoring and visualization tool for STM32 products
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STM32CubeProg
STM32CubeProgrammer software for all STM32
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Arm Keil MDK
Complete software development solution for all STM32 devices. Includes C/C++ Compiler, IDE/Debugger, CMSIS, RTOS, middleware
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Arm Keil MDK for STM32F0, STM32L0 and STM32G0
Complete software development solution for all STM32F0, STM32L0 and STM32G0 devices. Includes C/C++ Compiler, IDE/Debugger, CMSIS components, RTOS
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IAR Embedded Workbench for Arm
Integrated Development Environment
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STM32CubeL0
STM32Cube MCU Package for STM32L0 series (HAL, Low-Layer APIs and CMSIS, USB, File system, RTOS, Touch Sensing - and examples running on ST boards)
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STM32SnippetsL0
Example Code snippets covering STM32 L0 serie
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I-CUBE-EMBOS
embOS software expansion for STM32Cube
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I-CUBE-UNISON
UNISON software expansion for STM32Cube
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32L0538DISCOVERY
Discovery kit with STM32L053C8 MCU
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NUCLEO-L031K6
STM32 Nucleo-32 development board with STM32L031K6 MCU, supports Arduino nano connectivity
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P-NUCLEO-LRWAN3
STM32 Nucleo pack LoRa&#8482; LF band sensor and gateway
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Resource title
Resource type
09 Dec 2020

AN5408 - Migrating from STM32L0, STM32L1, and STM32L4 Series associated with SX12xx transceivers to STM32WL Series microcontrollers

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