MCX W23 Ultra-Low-Power Bluetooth® LE Wireless MCU

The NXP MCX W23 delivers ultra-low-power Bluetooth LE connectivity for battery-powered IoT and medical sensing devices

Image of NXP Semiconductors MCX W23 Ultra-Low-Power Bluetooth® LE Wireless MCUThe NXP MCX W23 wireless MCU family is purpose-built for battery-powered IoT applications where ultra-low-power consumption, compact form factor size, and reliability are critical. Designed for wearable, medical, and smart-sensing devices, MCX W23 integrates Bluetooth Low Energy (LE) connectivity with an Arm® Cortex®-M33 application core in a highly efficient, single-chip solution.

The MCX W23 enables long battery life through an optimized low-power architecture and flexible power options that support direct operation from coin-cell and silver oxide batteries. Built-in security features and certification under the NXP EdgeLock® Assurance program help protect connected devices throughout their lifecycle. A comprehensive development ecosystem—including FRDM-MCXW23 boards and sensor expansion options—allows designers to quickly evaluate, prototype, and deploy compact wireless devices for next-generation IoT and medical applications.

Features
  • Arm Cortex-M33 application core with TrustZone®-M support
  • Ultra-low-power Bluetooth Low Energy 5.3 wireless connectivity
  • Highly integrated single-chip wireless MCU with embedded Flash
  • Flexible power architecture supporting lithium and silver oxide batteries
  • Integrated EdgeLock security and SESIP Level 2/PSA Level 2 certification
  • Secure boot, secure debug, and secure over-the-air firmware updates
  • Compact package options as small as 2.6 mm x 2.5 mm optimized for miniaturized designs
Applications
  • Wearable and portable medical devices
  • Continuous glucose monitoring (CGM) systems
  • Smart inhalers and respiratory care devices
  • Vital signs and patient monitoring equipment
  • Smart appliance and smart home IoT
  • Wireless smart sensors
  • Asset tracking tags and beacons
  • Companion MCU for UWB-based localization systems

MCX W23 Ultra-Low-Power Bluetooth® LE Wireless MCU

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
New at DigiKey
MCXW23 HVQFN40
MCXW235BIHNARMCXW23 HVQFN406000 - Immediate$6.06View Details
New at DigiKey
MCXW23 WLCSP37
MCXW235BIUKARMCXW23 WLCSP370 - Immediate$6.06View Details
New at DigiKey
MCXW23 HVQFN40
MCXW236AIHNARMCXW23 HVQFN400 - Immediate$3.66View Details
New at DigiKey
MCXW23 WLCSP37
MCXW236AIUKARMCXW23 WLCSP370 - Immediate$3.66View Details
New at DigiKey
MCXW23 HVQFN40
MCXW236BIHNARMCXW23 HVQFN406000 - Immediate$6.83View Details
New at DigiKey
MCXW23 WLCSP37
MCXW236BIUKARMCXW23 WLCSP370 - Immediate$6.83View Details

Development Board

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
New at DigiKey
FRDM DEVELOPMENT BOARD FOR MCX W
FRDM-MCXW23FRDM DEVELOPMENT BOARD FOR MCX W43 - Immediate$45.48View Details
Published: 2026-03-12