
NXP Semiconductors MCX A series MCUs, powered by the Arm® Cortex®-M33, are general-purpose MCUs designed to address a wide range of applications with scalable device options, low power and intelligent peripherals. The innovative power architecture is designed to support high utilization of I/Os and power efficiency with a simple supply circuit in a smaller footprint. Designed to support more GPIO pins for additional external connections, the MCX A allows designers to utilize a smaller package, simpler board design and lower system BOM costs. The MCX A Series is supported by the MCUXpresso Developer Experience.
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Features
Scalability and balanced performance
- The MCX A series is highly scalable, offering a balance between cost, performance and power consumption
Autonomous and low-power peripherals
- Autonomous peripherals take the load off the core for power-saving and power modes to keep the intelligent peripherals running while the core is in sleep
- Arm® Cortex®-M33 at 48 MHz or 96 MHz
- Up to 128 kB Flash with 4 kB cache
- Up to 32 kB RAM with 8 kB ECC (EIM and ERM)
- ROM to assist in system programming
- Low-power interfaces for serial communication, I3C, USB, and more
- -40 °C to 125 °C temperature range

MCX A Series Block Diagram

MCX A Series Products
Applications
- Sensing & metering
- Building control & automation
- Smart circuit breaker
- Home appliances
- USB accessories
- Compressor drive
- Smart lighting
- Hand-held devices
- Power tools
- IoT nodes
Technical Documents
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Reference Manual
Technical Resources
Application Note
User Guide
User Manual
Videos
Published: 17 January 2025