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NXP — MCX L Series Microcontrollers (MCUs)

 

 

NXP

 

NXP MCX L Series of Microcontrollers

Ultra-low-power MCUs with a dedicated sense domain

The MCX L series microcontrollers by NXP are well-suited for Industrial and IoT (IIoT) applications, offering a high-efficiency architecture built around an Arm® Cortex®-M33 core running at up to 96 MHz, alongside a secondary Cortex®-M0+ core operating at up to 10 MHz.

This product line integrates Adaptive Dynamic Voltage Control (ADVC), a feature designed to minimize power consumption during low-frequency operation. It also includes a dedicated ultra-low-power Sense Domain, which supports peripheral activity while the main core remains in Deep Power Mode—allowing for energy-efficient data collection without requiring core wakeup.

Thanks to a dual-domain setup, developers can achieve physical separation of tasks, in addition to software-level isolation provided by TrustZone technology on the M33 core. This is particularly beneficial for simplifying the design and certification of metering and other safety-critical systems.

Security is also a key focus, with built-in EdgeLock® features enabling secure boot and hardware-based cryptographic acceleration, ensuring reliable performance for both wired and wireless low-power data exchanges.

Features

Dual Core Architecture

Arm® Cortex-M33 for real-time computing and connectivity stacks and an Arm Cortex-M0+ ultra-low-power sense domain for continuous data collection and processing using minimal power.

 Ultra-low-power design

Addressing fundamental challenges in sensor technology by enabling more efficient data collection and reporting with minimal energy consumption.

 IoT Security

EdgeLock® security capabilities including secure manufacturing, fast and secure boot, secure debug access and configuration.

Applications

  • Building control
  • Industrial sensing
  • Smoke and fire alarms
  • Flow meters
  • Smart appliances
  • Motion detectors

Ultra-low-power and sense domain

  • Optimized Power Efficiency
    MCX L series delivers power-efficient performance in run mode, consuming as little as 23 µA/MHz at 3.3 V (room temperature).
  • Flexible Low Power Modes
    With support for up to seven low power modes, users can fine-tune which peripherals and clocks remain active, balancing average power consumption and wake-up latency.
  • Dedicated Ultra-Low-Power (ULP) Sense Domain
    A separate ULP Sense domain featuring an open Cortex-M0+ core (up to 10 MHz) handles data acquisition, pre-processing, and thresholding at extremely low power.
    • Peripherals can operate independently of the main Cortex-M33 core.
    • Cortex-M0+ assistance can be leveraged to minimize time spent in high-power real-time operation.
  • Connectivity Ready
    The MCX L25x series pairs easily with connectivity solutions such as the external UBX100 sub-GHz transceiver for data transmission to the cloud.
  • Robust Security with EdgeLock®
    Integrated NXP EdgeLock® security capabilities include:
    • Secure manufacturing
    • Fast, secure boot
    • Secure debug access and configuration
  • Advanced Cryptographic Support
    • Pre-provisioned unique device identity
    • Hardware acceleration for public key cryptography
    • Arm TrustZone® technology for isolating sensitive code (e.g., cryptographic stacks or metrology applications)

 

 

NXP — MCX L Series Microcontrollers

 

Block Diagrams

MCX L25X

NXP — MCX L25X Block Diagram

MCX L14X

NXP — MCX L14X Block Diagram