1. Devices
  2. KWxx Series
  3. KW31Z
  4. MKW31Z512xxx4


  • Core

    Cortex-M0+, 48 MHz

  • Family

    KWxx Series

  • Sub-Family


  • CMSIS Pack


The KW31Z is an ultra low-power, highly-integrated single-chip device that enables Bluetooth® Smart/Bluetooth® Low Energy (BLE) v4.2 RF connectivity for portable, extremely low-power embedded systems.
Applications include portable health care devices, wearable sports and fitness devices, AV remote controls, computer keyboards and mice, gaming controllers, access control security systems, smart energy and home area networks.
The KW31Z Wireless MCU integrates a 2.4 GHz transceiver supporting FSK/GFSK modulations, an ARM® Cortex®-M0+ CPU, up to 512 KB Flash and up to 128 KB SRAM, BLE Link Layer hardware, hardware security and peripherals optimized to meet the requirements of the target applications.

  • Features



  • Memory

    IRAM1 128 KiB
    IROM1 512 KiB