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작성자 master 작성일18-03-14 13:17 조회1,373회 댓글0건


STM32L0 Series

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 161 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 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



STM32L0 MCU series: a great and affordable ecosystem


  • Purchase a 32-pin or 64-pin Nucleo boardDiscovery 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-ARMKeil 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.

STM32L0x1 Access 

The STM32L0x1 Access line is the entry point of the STM32L0 series offering tiny packages such as the WLCSP25 (2x2mm), up to 192-Kbytes of Flash memory, up to 20-Kbytes of RAM and up to 6Kbytes of embedded EEPROM. This line also gives access to the autonomous peripherals, real-time clock, low-power time clock, hardware encryption and ultra-low-power 12-bit ADC with 48 µA budget consumption at 100 Ksps.

The STM32L0x1 line is the perfect fit for applications such as mice or keyboards, as a result of the very low active current consumption, and well fits industrial applications such as gas and water meters, thanks to the embedded hardware encryption (AES 128-bit) and peripherals available in ultra-low-power mode.


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