STMicroelectronics

STM32L4+ | Ultra-low-power MCU

STM32L4
STM32L4+ | Ultra-low-power MCU
Description

ST has extended the STM32L4 technology providing more performance (up to 120 MHz), more embedded memory (up to 2 Mbytes of Flash memory and 640 Kbytes of SRAM) and richer graphics and connectivity features while keeping our best-in-class ultra-low-power capability.

The STM32L4+ series shatters the limits of processing capabilities in the ultra-low-power world. By delivering an 150 DMIPS/409 CoreMark score while executing from internal Flash memory and embedding 640 Kbytes SRAM, the STM32L4+ series enables more advanced consumer, medical and industrial low-power applications and devices.

STM32L4+ microcontrollers offer dynamic voltage scaling in order 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 as well as low-power analog peripherals such as op amps, comparators, 12-bit DACs and 16-bit ADC (hardware oversampling).

The new STM32L4+ series also embeds advanced features for rendering graphics, enabling state-of-the-art graphical user interfaces.
The Chrom-ART Accelerator™, ST's proprietary 2D hardware graphic accelerator, efficiently handles repetitive graphics releasing the main CPU capabilities for real time processing or even more advanced graphic operations.

The Chrom-ART Accelerator is coupled with the large embedded SRAM, the Chrom-GRC™ round display memory optimizer, the high-throughput Octo-SPI interface and the advanced TFT and DSI controllers, allowing you to achieve “smartphone-like” graphical user interfaces in an ultra-low power single-chip solution.

The STM32L4+ series includes different lines: STM32L4R5/S5, STM32L4R7/S7 (with TFT interface), STM32L4R9/S9 (with MIPI-DSI and with TFT interface) and STM32L4P5/Q5.

To simplify migration and give you all the flexibility you need, the STM32L4+ is pin-to-pin compatible with the different STM32 series and is fully integrated in the STM32 ecosystem.
  • Ultra-low-power mode: 20 nA with backup registers without real-time clock (5 wakeup pins)
  • Ultra-low-power mode + RTC: 150 nA with backup registers (5 wakeup pins)
  • Ultra-low-power mode + 4 Kbytes of RAM: 242 nA
  • Ultra-low-power mode + 4 Kbytes of RAM + RTC: 390 nA
  • Dynamic run mode: down to 41 μA/MHz
  • Wake-up time: 5 μs

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