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STMicroelectronics STM32L4 Ultra-Low-Power MCU

ST has built a new architecture to reach extraordinary ultra-low-power figures thanks to its high flexibility.

STMicroelectronics-STM32L4-product-picture

ST has built a new architecture to reach extraordinary ultra-low-power figures thanks to its high flexibility.

STM32L4 MCUs have scored 153 in the standardized EEMBC™ ULPBench® 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).

 

Key features

Additional features

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 is available in 2 different lines: STM32L476 (USB, LCD) and STM32L486 (USB, LCD, AES).
  • 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: 30 nA with backup registers without real-time clock (5 wakeup pins)
  • Ultra-low-power mode + RTC: 330 nA with backup registers (5 wakeup pins)
  • Ultra-low-power mode + 32 Kbytes of RAM: 360 nA
  • Ultra-low-power mode + 32 Kbytes of RAM + RTC: 660 nA
  • Dynamic run mode: down to 100 μA/MHz
  • Wake-up time: 5 μs

 

Applications

  • Wearables
  • Metering
  • IOT
  • Industrial sensors
  • Motor control
  • Audio applications

 

Discovery Kit

The STM32L476GDISCOVERY helps users to develop and share applications with the STM32L4 ultra-low-power microcontrollers.

The Discovery kit combines STM32L476 features with LCD, LEDs, audio DAC, sensors (microphone, 3 axis gyroscope, 6 axis compass), joystick, USB OTG, Quad-SPI Flash memory, expansion and probing connectivity. It includes an embedded Ammeter which measures the MCU consumption in low power modes. An external board can be connected thanks to extension and probing connectors.

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