Note: QN9090/30 is preferred for any new Bluetooth LE design. No new software releases planned
The KW31Z is an ultra-low-power, highly-integrated single-chip device that enables Bluetooth® low energy v4.2 RF connectivity for portable, extremely low-power embedded systems. Applications include portable healthcare 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, Bluetooth Low Energy Link Layer hardware, hardware security and peripherals optimized to meet the requirements of the target applications.
| Part Number | Wireless Connectivity Protocol | Memory | Package Size | Hardware Development Tool |
| MKW41Z512VHT4 | Bluetooth Low Energy and IEEE 802.15.4 | 512 KB Flash,128 KB RAM | 7 mm x 7 mm x 1 mm48-pin Laminate QFN | FRDM-KW41ZUSB-KW41Z |
| MKW41Z256VHT4 | 256 KB Flash,64 KB SRAM | |||
| MKW41Z512CAT4R | 512 KB Flash,128 KB RAM | 3.9 mm x 3.8 mm75-pin WLCSP | ||
| MKW31Z512VHT4 | Bluetooth Low Energy | 512 KB Flash,128 KB RAM | 7 mm x 7 mm x 1 mm48-pin Laminate QFN | |
| MKW31Z256VHT4 | 256 KB Flash,64 KB SRAM | |||
| MKW31Z512CAT4R | 512 KB Flash,128 KB RAM | 3.9 mm x 3.8 mm75-pin WLCSP | ||
| MKW21Z512VHT4 | IEEE 802.15.4 | 512 KB Flash,128 KB RAM | 7 mm x 7 mm x 1 mm48-pin Laminate QFN | |
| MKW21Z256VHT4 | 256 KB Flash,64 KB SRAM |
MCUXpresso Config Tools – A comprehensive suite of system configuration tools, including pins, clocks, SDK builder and more.
MCUXpresso SDK – An open-source software development kit (SDK) built specifically for your processor and evaluation board selections.
MCUXpresso IDE – An easy-to-use integrated development environment (IDE) for creating, building, debugging, and optimizing your application.
Kinetis Connectivity Software Version 1.0.1 includes the following components:
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Quick reference to our documentation types.
1-5 of 12 documents
1 design file
Receive the full breakdown. See the product footprint and more in the eCad file.
1-5 of 8 hardware offerings
Additional hardware available. View our featured partner solutions.
Quick reference to our software types.
1-5 of 11 software files
Additional software available. View our featured partner solutions.
Note: For better experience, software downloads are recommended on desktop.
To get further assistance directly from NXP, please see our Engineering Services.
1-5 of 19 engineering services
To find additional partner offerings that support this product, visit our Partner Marketplace.
