STM32L4 series of ultra-low-power MCUs
ST has built a new architecture to reach best-in-class ultra-low-power figures thanks to its high flexibility. STM32L4 MCUs have scored 447 ULPMark-CP and 167 ULPMark-PP in the standardized EEMBC™ ULPMark® tests that compare the efficiency of ultra-low-power microcontrollers. Moreover, the STM32L4 series shatters performance limits in the ultra-low-power world. It delivers 100 DMIPS based on its Arm® Cortex®-M4 core with FPU and ST ART Accelerator™ at 80 MHz.
STM32L4 microcontrollers offer dynamic voltage scaling to balance power consumption with processing demand, low-power peripherals (LP UART, LP timers) available in Stop mode, safety and security features, smart and numerous peripherals, advanced and low-power analog peripherals such as op amps, comparators, LCD, 12-bit DACs and 16-bit ADCs (hardware oversampling).
The series are available in different lines: STM32L4x1 (Access line), STM32L4x2 (USB Device), STM32L4x3 (USB Device, LCD), STM32L4x5 (USB OTG) and STM32L4x6 (USB OTG, LCD).
To simplify migration and give you all the flexibility you need, the STM32L4 is pin-to-pin compatible with the different STM32 series and opens the door to the full STM32 ecosystem.
- Ultra-low-power mode: 8 nA with backup registers without real-time clock (5 wakeup pins)
- Ultra-low-power mode + RTC: 200 nA with backup registers (5 wakeup pins)
- Ultra-low-power mode + 8 Kbytes of RAM: 195 nA
- Ultra-low-power mode + 8 Kbytes of RAM + RTC: 340 nA
- Dynamic run mode: down to 28 μA/MHz
- Wake-up time: 5 μs
Learn more about the key features and specifications of the 32-bit Arm Cortex-M4 processor, featuring dedicated Digital Signal Processing (DSP) IP blocks and optional FPU.
This video describes the main components and features of the B-L475E-IOT board and shows a typical use of this platform as an IoT node using AWS (Amazon Web Services) to demonstrate the interactions between that node and a cloud server to build an intelligent system.
In our continued efforts to simplify developers’ life within the STM32Cube environment, we just introduced a new video demonstrating how to easily port an example built using ST’s new STM32Cube Low-Layer APIs from one board (NUCLEO-L476RG) to another (32L496GDISCOVERY) within the same STM32 family.
Discover the large and pin-to-pin compatible STM32 ultra-low-power portfolio. This offer covers more than 2 billion of applications like IoT, Industrial sensors, wearables & home automation.
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Events and Seminars
Getting started with STM32L4
- Purchase a 32-pin, 64-pin or 144-pin Nucleo board, Discovery kit or Evaluation kit for STM32L4 MCUs.
Download the STM32CubeL4 embedded software package containing the HAL, LL (low-layer) APIs, and middleware. Then install ST’s STM32CubeMX graphical software configuration tool that supports pinout configuration, code generation and a power consumption calculator. Start with one of the many examples provided or build your own project.
- Get trained watching the STM32L4 Online Training