Arm® Cortex®-M0+|Kinetis® KW31Z Bluetooth Low Energy 32-bit MCUs

Product Details

Block Diagram

Kinetis^® W Series KW31Z MCUs Block Diagram

Get diagram PDF

Features

Bluetooth Low Energy Radio Features

2.4 GHz Bluetooth Low Energy version 4.2 Compliant
Typical Receiver Sensitivity (Bluetooth Low Energy) = -95 dBm
Programmable Transmitter Output Power up to +3.5 dBm

Core and Memories

Up to 48 MHz Arm^® Cortex^®-M0+ core
Up to 512 KB Flash memory
Up to 128 KB SRAM
Excellent coexistence performance
Integrated balun to reduce system cost and PCB board area

Low Power Consumption and Operating Voltage Ranges

Nine low-power modes to provide power optimization based on application requirements
Typical Rx/Tx Current (DC/DC Enabled): 6.5 mA / 8.4 mA
Bypass Voltage: 1.71V to 3.6V
DCDC Converter Buck Configuration: 2.1V to 4.2V
DCDC Converter Boost Configuration: 0.9V to 1.795V

Analog modules

16-bit Analog-to-Digital Converter (ADC)
12-bit Digital-to-Analog Converter (DAC)
6-bit High Speed Analog Comparator (CMP)

Security

AES-128 Accelerator (AESA), True Random Number Generator (TRNG)

Supported Software

Bluetooth Low Energy Host Stack and Profiles
Generic FSK Link Layer Software
Kinetis^® Software Development Kit (SDK)
FreeRTOS kernel and a bare-metal non-preemptive task scheduler
Support for MCUXpresso and IAR

Part numbers include: MKW31Z256VHT4, MKW31Z512CAT4, MKW31Z512VHT4.

Comparison Table

Kinetis KW41Z Family Solutions

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 mm 48-pin Laminate QFN	FRDM-KW41Z USB-KW41Z
MKW41Z256VHT4		256 KB Flash, 64 KB SRAM	7 mm x 7 mm x 1 mm 48-pin Laminate QFN
MKW41Z512CAT4R		512 KB Flash, 128 KB RAM	3.9 mm x 3.8 mm 75-pin WLCSP
MKW31Z512VHT4	Bluetooth Low Energy	512 KB Flash, 128 KB RAM	7 mm x 7 mm x 1 mm 48-pin Laminate QFN
MKW31Z256VHT4		256 KB Flash, 64 KB SRAM	7 mm x 7 mm x 1 mm 48-pin Laminate QFN
MKW31Z512CAT4R		512 KB Flash, 128 KB RAM	3.9 mm x 3.8 mm 75-pin WLCSP
MKW21Z512VHT4	IEEE 802.15.4	512 KB Flash, 128 KB RAM	7 mm x 7 mm x 1 mm 48-pin Laminate QFN
MKW21Z256VHT4	IEEE 802.15.4	256 KB Flash, 64 KB SRAM	7 mm x 7 mm x 1 mm 48-pin Laminate QFN

MCUXpresso Software and Tools

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.

Protocol Stacks

Connectivity Software

Kinetis Connectivity Software Version 1.0.1 includes the following components:

KW40Z Bluetooth^® low energy v4.2 stack, v1.1.4
KW40Z IEEE^® 802.15.4-2006/2011 MAC/PHY implementation v5.2.4
KW40Z Simple Media Access Controller (SMAC) v3.2.4
KW40Z-enabled Connectivity Framework

NXP Designs: Reference Design Library

Technical content and expertise to help jump start your design and get you to production faster.

Buy/Parametrics

‌ ‌ ‌	‌ ‌	‌ ‌	‌ ‌	‌ ‌	‌ ‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌
‌ ‌ ‌	‌	‌	‌	‌	‌

Documentation

Quick reference to our documentation types.

1-5 of 12 documents

^{Data Sheet}
MKW41Z/31Z/21Z Data Sheet

PDFRev 4Apr 5, 20181.3 MBMKW41Z512English
^{Reference Manual}
MKW41Z/31Z/21Z Reference Manual

PDFRev 3Apr 5, 201821.3 MBMKW41Z512RMEnglish
Sign in required
^{Application Note}
FRDM-KW41Z RF System Evaluation Report for 802.15.4 Applications

PDFRev 1.2Mar 16, 20181.4 MBAN11999English
^{Application Note}
Hardware Design Considerations for MKW41Z/31Z/21Z BLE and IEEE 802.15.4 Devices

PDFRev 2Dec 8, 20171.7 MBAN5377English
^{Application Note}
FRDM-KW41Z RF System Evaluation Report for BLE Applications

PDFRev 1Nov 12, 20172.2 MBAN12059English
^{User Guide}
FRDM-KW41Z Quick Start Guide

PDFRev 4Oct 21, 2019642.1 KBFRDMKW41ZQRGEnglish
Sign in required
^{User Guide}
FRDM-KW41Z Freedom Development Board User's Guide

PDFRev 1Aug 8, 20182.0 MBFRDMKW41ZUGEnglish
Sign in required
^{User Guide}
FRDM-KW41Z Freedom Development Board

PDFRev 1May 20, 20181.9 MBFRDMKW41ZUGvC2English
Sign in required
^{User Guide}
IoT Toolbox Mobile Application User Manual

PDFRev 0Dec 19, 20176.0 MBUM11087English
Sign in required
^{User Guide}
USB-KW41Z Sniffer/Development Board User's Guide

PDFRev 1Jan 3, 2017700.3 KBUSBKW41ZUGEnglish
Sign in required
^Errata
Mask Set Errata for Mask 1N16S

PDFRev 25 JUL 2019Aug 26, 2019145.6 KBKINETIS_W_1N16SEnglish
^{Fact Sheet}
Kinetis^® KW41Z/31Z/21Z Wireless MCUs - Fact Sheet

PDFRev 5Feb 27, 20203.4 MBKNTSKW41Z31Z21ZFSEnglish

Show All

Design Resources

Design Files

Quick reference to our design files types.

1 design file

Receive the full breakdown. See the product footprint and more in the eCad file.

^{Design Files - miscellaneous}
KW41Z/31Z/21Z Design in check-list

XLSXRev 1Nov 21, 2017 17:22:0095.3 KBKW41Z-31Z-21Z-DESIGN-CHECK
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue

Hardware

Quick reference to our board types.

1-5 of 8 hardware offerings

^{Evaluation and Development Boards}
Freedom Development Kit for Kinetis® KW41Z/31Z/21Z MCUsFeatured

FRDM-KW41Z
^{Emulators, Probes, and Programmers}
Universal Multilink Development Interface

UMultilink
^{Emulators, Probes, and Programmers}
PEmicro Cyclone programmer

CYCLONE
^{Emulators, Probes, and Programmers}
PEmicro Cyclone FX programmer

CYCLONE-FX
^{Emulators, Probes, and Programmers}
LPC-Link2

OM13054
^{Emulators, Probes, and Programmers}
Universal Multilink FX High-Speed Development Interface

U-MULTILINK-FX
^{Evaluation and Development Boards}
Bluetooth Low Energy/IEEE^® 802.15.4 Packet Sniffer/USB Dongle

USB-KW41Z
^{Reference Design}
KW41Z Power Amplifier Reference Design

KW41Z-PA-RD

Show All

Software

Quick reference to our software types.

1-5 of 11 software files

^{Development IDEs and Build Tools}
Design Studio Integrated Development Environment (IDE)Featured

Download Options
^{BSPs and Device Drivers}
Open-CMSIS-Packs

Download Options
^{BSPs and Device Drivers}
MCUXpresso Config Tools: Pins, Clocks and Peripherals

Download Options
Additional software available. View our featured partner solutions.
^{Code Snippets}
MCU Bootloader for NXP Microcontrollers

Download Options
^{Connectivity Software}
Kinetis KW41Z Connectivity Software

EXERev 1.0.2Oct 11, 2016 00:00:0064556 KBKW41Z-CONNECTIVITY-SOFTWARE
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Connectivity Software}
Test Tool for Connectivity Products

EXERev 12.9.2.2Oct 2, 2020 08:29:0092.4 MBTest_Tool_12.9.2.2
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Connectivity Software}
Kinetis KW41Z Connectivity Software Linux

TGZRev 1.0.2Nov 16, 2016 00:00:00157733 KBKW41Z-CONNECTIVITY-SOFTWARE-LIN
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Debugging and Visualization Tools}
Kinetis Protocol Analyzer Adapter

EXERev 2.0.4Feb 20, 2021 12:24:0016.5 MBKinetis_Protocol_Analyzer_Adapter_2.0.4.1
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Debugging and Visualization Tools}
IoT Toolbox - Google Android app

HTMLRev 0May 8, 2019 00:00:0015 KBIoT-Toolbox-Google-Android-app

Download
^{Debugging and Visualization Tools}
IoT Toolbox – Apple iOS app

HTMLRev 0May 8, 2019 00:00:006 KBIoT-Toolbox-Apple-iOS-app

Download
^{Software Development Resources}
Bluetooth Developer Studio Plug-In

ZIPRev 1.0.0Oct 11, 2016 00:00:00171.1 KBBDS-PLUG-IN-FOR-KSDK
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue

Kinetis® KW31Z-2.4 GHz Bluetooth Low Energy Wireless Radio Microcontroller (MCU) based on Arm® Cortex®-M0+ Core

Product Details

Block Diagram

Kinetis® W Series KW31Z MCUs Block Diagram

Features

Bluetooth Low Energy Radio Features

Core and Memories

Low Power Consumption and Operating Voltage Ranges

Analog modules

Security

Supported Software

Comparison Table

Kinetis KW41Z Family Solutions

MCUXpresso Software and Tools

Protocol Stacks

Connectivity Software

NXP Designs: Reference Design Library

Related products

Applications

Industrial

Mobile

Smart Home

Buy/Parametrics

Documentation

Filter by

Design Resources

Design Files

Filter by

KW41Z/31Z/21Z Design in check-list

Filter By

Hardware

Filter By

Freedom Development Kit for Kinetis® KW41Z/31Z/21Z MCUsFeatured

Filter By

Software

Filter by

Design Studio Integrated Development Environment (IDE)Featured

Kinetis KW41Z Connectivity Software

Test Tool for Connectivity Products

Kinetis KW41Z Connectivity Software Linux

Kinetis Protocol Analyzer Adapter

IoT Toolbox - Google Android app

IoT Toolbox – Apple iOS app

Bluetooth Developer Studio Plug-In

Filter By

Engineering Services

Filter by

Support

What do you need help with?

Recommended Communities

Suggested Links

Kinetis^® KW31Z-2.4 GHz Bluetooth Low Energy Wireless Radio Microcontroller (MCU) based on Arm^® Cortex^®-M0+ Core

Kinetis^® W Series KW31Z MCUs Block Diagram