STM32® 32-bit MCU Family

Leading supplier of ARM® Cortex®-M microcontrollers

STM32L4 Series of Ultra-Low-Power MCUs

The new STM32L4+ devices — a new generation of the STM32L4 series that stretches performance to 150DMIPS (233 ULPMark-CP) at 120MHz — can act as the central controller in a full range of fitness bands, smart watches, small medical equipment, smart meters, smart industrial sensors and more. All these applications require sophisticated functions, instant responses, and minimal downtime for battery charging, making the ultra-efficient STM32L4+ an ideal fit.

STM32L4+ gives application designers the features they need to achieve these goals: strong processor performance with the largest on-chip memory for this type of ultra-low-power microcontroller, and the most advanced graphics capabilities for smooth and fluid user experiences. The new Chrom-GRC™ graphics controller can handle circular displays (TFT-LCDs) just as efficiently as square ones, without wasting resources managing pixels that are never displayed. Also on-chip is ST’s innovative Chrom-ART Accelerator™, which enhances graphics performance.

STM32L4 MCUs have scored 123 (world record) 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.

  • Embedded peripherals: dynamic voltage scaling, low-power peripherals (LP UART, LP timers) available in Stop mode, safety and security features, advanced and low-power analog peripherals such as op amps, comparators, LCD, 12-bit DACs and 16-bit ADCs (hardware oversampling).
  • Ultra-low-power mode with 32 Kbytes of RAM and real-time clock: 660 nA power consumption

ARM® Cortex®-M4+ (DSP + FPU) - 80 MHz

  • ART Accelerator™
  • 16- and 32-bit timers
  • SAI + audio PLL
  • SWP
  • 1x CAN
  • 2x 12-bit DACs
  • Temperature sensor
  • Low voltage 1.71 to 3.6 V
  • VBAT mode
  • Unique ID
  • Capacitive touch sensing
  • AES-256*

Note: * for STM32L486, STM32L443 and STM32L442

View All STM32L4 ICs View STM32L4 Evaluation Boards