MCX L14 Ultra-Low-Power MCUs for Always-on Sensing

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MCX L14 Series Cortex®-M33 MCUs extends battery life for edge devices while delivering key features for industrial and commercial sensors. These devices combine an Arm® Cortex®-M33 core running up to 48 MHz with an autonomous sense domain powered by an Arm Cortex-M0+ core up to 10 MHz. This architecture enables low-power peripheral operation while the main core remains in Deep Power Mode, minimizing event-triggering power consumption and ensuring ultra-efficient data acquisition. The dual-domain design also provides physical separation of applications, simplifying development and certification of applications combining sensors, data processing and data transmission.

MCX L Series features EdgeLock® security capabilities for secure boot and hardware‑accelerated cryptography, meeting stringent requirements for wired and over-the-air (OTA) low-power transactions. Supported by MCUXpresso Developer Experience to optimize, simplify and accelerate embedded system development.

製品詳細

ブロック図

MCX L14

Features

Core Platform

Arm Cortex-M33 running up to 48 MHz and Arm Cortex-M0+ running up to 10 MHz

Memory

Up to 256 kB on-chip flash program memory with flash accelerator and 4 kB low-power cache
Minimum flash programming size: 16 bytes
Support Flash Swap with 8 kB granularity
Up to 64 KB static random-access memory (SRAM) and an additional 8 kB with ECC capability (supports one-bit correction and two-bit detection)
All RAM can be retained down to deep Power-down mode

Peripherals

Analog

Single‑ended 16‑bit analog-to-digital converter (ADC) with 2.1 MSamples/s rate in 16‑bit mode; supports 12‑bit mode at 2.5 MSamples/s for increased bandwidth
Integrated temperature sensor
Second 12‑bit ADC (500 kSamples/s) functional down to Deep Power‑down mode
One high‑speed comparator with eight input pins and an 8‑bit DAC as an internal reference, functional down to Deep Power‑down mode (can be used as a wake‑up source)

Timers

Three 32-bit standard general-purpose asynchronous timers/counters, each timer supports up to four capture inputs and four compare outputs; specific timer events can be selected to generate direct memory access (DMA) requests
Up to 2x quad timer (QTimer) cascadable with capture and compare capabilities (can be used for quadrature position encoder) that is functional down to Deep Power-down mode
Low-power timer (LPTimer)
Windowed Watchdog Timer
Micro‑Tick Timer running from a 1 MHz clock; wakes device from reduced‑power modes (down to Deep‑sleep with flash off) with extremely low power consumption
42-bit free-running OS timer as continuous timebase for the system, available in any reduced power modes

Communication Interfaces

2x Low-power serial peripheral interface (LPSPI) modules, supporting up to 50 MHz operation frequency in master mode
Up to 2x Low-power inter-integrated circuit (LPI2C) supporting Standard, Fast, Fast+ and Ultra Fast modes with one additional LPI2C is functional down to Deep Power-down mode
Up to 3x LPUART (Low Power UART), provides asynchronous, serial communication capabilities. 1 additional LPUART functional down to Deep Power-down mode

MCUXpresso Developer Experience

MCUXpresso Developer Experience
Selection of integrated development experience (IDE) choices
Pin, clock, peripheral, security and memory config tools
Security programming and provisioning tools
Software development kit (SDK)
Zephyr real-time operating system (RTOS) support

Security

Glitch attack resistant keyed access (Glikey)
Memory block controller (MBC) to Read, Write and Execute permission of each flash block where the configuration can be locked
Unique 128‑bit unique device serial number for identification (UUID)
Code watchdog for code‑flow integrity detection
Three‑level Readout Protection enabling different protection levels across system life‑cycle stages
Flash programming through in system programming (ISP) commands over LPUA+B28RT interface with auto baud