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

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.

Documentation

Quick reference to our documentation types.

1-5 of 13 documents

Clear all

^{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}
Compact Planar Antennas for 2.4 GHz Communication Designs and Applications within NXP EVK Boards

PDFRev 4Nov 11, 20204.5 MBAN2731English, 中文
^{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

1 design file

Clear all

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

XLSXRev 1Nov 21, 201795.3 KBKW41Z-31Z-21Z-DESIGN-CHECK
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue

Hardware

1-5 of 7 hardware offerings

Clear all

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

FRDM-KW41Z
^{Emulators, Probes, and Programmers}
PEmicro Cyclone programmer

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

CYCLONE-FX
Additional hardware available. View our featured partner solutions.
^{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
^Designs
KW41Z Power Amplifier Reference Design

KW41Z-PA-RD

Show All

1-5 of 15 hardware offerings

Clear all

^{Test Accessories and Debugger}
Arm ULINKpro

The ULINKpro debug and trace unit connects your PC's USB port to your target system and allows you to program, debug, and analyze your applications using its unique strea...

By Arm Platinum Partner
^{Test Accessories and Debugger}
Universal Access Device 3+ (UAD

The UAD3+, equipped with up to 4 GB of trace memory and powerful interfaces to target and host, is the right solution for trace, multicore debugging, profiling and code c...

By PLS Development Tools Gold Partner
^{Test Accessories and Debugger}
Flasher ARM

In-Circuit-Flash-Programmer based on the J-Link family for production and in-field-service. Offers fastest flash algorithms available, multiple integration options (RS232...

By SEGGER Microcontroller GmbH Gold Partner
^{Test Accessories and Debugger}
CYCLONE FX

Advanced Cyclone programmer. Models support high-speed in-circuit flash programming, debugging, and test of many NXP 8-/16-/32-bit MCUs. Enhanced speed/security/storage...

By P & E Microcomputer Systems, Inc Gold Partner
^{Test Accessories and Debugger}
TRACE32 JTAG/SWD Debugger for A

Lauterbach has experience in making world class microprocessor development tools since 1979. TRACE32 supports technologies like JTAG, SWD, NEXUS or ETM with embedded debu...

By Lauterbach Gold Partner
^{Test Accessories and Debugger}
J-Link ULTRA+

Builds atop the J-Link to further enhance the debug experience. The J-Link ULTRA+ is three times faster than the industry standard J-Link, at a 3 MBytes/s download speed ...

By SEGGER Microcontroller GmbH Gold Partner
^{Test Accessories and Debugger}
Arm ULINKplus

ULINKplus combines isolated debug connection, power measurement, and I/O for test automation. It gives you visibility to function, timing, and power consumption of your e...

By Arm Platinum Partner
^{Test Accessories and Debugger}
USB Multilink Universal FX

Multilink Universal FX is a high-speed,BDM/JTAG debug probe for Kinetis, LPC, S32, Qorivva MPC5xxx, MPC5xx/8xx, ColdFire, HC(S)12(X), S12Z, HCS08, RS08, DSC, 683xx, & HC1...

By P & E Microcomputer Systems, Inc Gold Partner
^{Test Accessories and Debugger}
CYCLONE LC

Production programmer. Models support high-speed, low-cost, in-circuit flash programming, debugging, & test of many NXP 8-/16-/32-bit systems. Stand-alone or host-control...

By P & E Microcomputer Systems, Inc Gold Partner
^{Test Accessories and Debugger}
J-Link PRO

J-Link PRO is an enhanced version of the SEGGER J-Link. This emulator supports ARM/Cortex devices. This has an Ethernet interface in addition to the USB interface. This ...

By SEGGER Microcontroller GmbH Gold Partner
^{Test Accessories and Debugger}
USB Multilink Universal

The USB Multilink Universal is an all-in-one BDM/JTAG debug probe for NXP Kinetis, LPC, i.MX RT, S32, HCS08, HC(S)12(X), S12Z, RS08, ColdFire V1/+V1, ColdFire V2-4*, Qori...

By P & E Microcomputer Systems, Inc Gold Partner
^{Test Accessories and Debugger}
Universal Access Device 2next (

The (UAD2next) combines the state-of-the-art debugging features and CAN with trace capabilities. It can be extended by plugin trace modules supporting e.g. ARM CoreSight ...

By PLS Development Tools Gold Partner
^{Test Accessories and Debugger}
Green Hills Probe

High speed on-chip download, run control and trace.

By Green Hills Software Platinum Partner
^{Test Accessories and Debugger}
Universal Access Device 2pro (U

The UAD2pro offers fast and flexible communication between Universal Debug Engine on the Host PC and the microcontroller target. Host interface is USB 2.0. Target interfa...

By PLS Development Tools Gold Partner
^{Test Accessories and Debugger}
Arm DSTREAM

The Arm DSTREAM family of high performance debug and trace probes enable Arm Development Studio to debug all Arm-based devices through a variety of interfaces.

By Arm Platinum Partner

Show All

To find a complete list of our partners that support this product, please see our Partner Marketplace.

Software

1-5 of 10 software files

Clear all

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

Download Options
^{BSP, Drivers and Middleware}
MCUXpresso Config Tools - Pins, Clocks, Peripherals

Download Options
^{Code Snippets}
MCU Bootloader for NXP Microcontrollers

Download Options
Additional software available. View our featured partner solutions.
^{Protocol Stacks}
Kinetis KW41Z Connectivity Software

EXERev 1.0.2Oct 11, 201664556 KBKW41Z-CONNECTIVITY-SOFTWARE
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Protocol Stacks}
Kinetis KW41Z Connectivity Software Linux

TGZRev 1.0.2Nov 16, 2016157733 KBKW41Z-CONNECTIVITY-SOFTWARE-LIN
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Protocol Stacks}
Bluetooth Developer Studio Plug-In

ZIPRev 1.0.0Oct 11, 2016171.1 KBBDS-PLUG-IN-FOR-KSDK
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Test, Debug and Analyzer Software}
Kinetis Protocol Analyzer Adapter

EXERev 2.0.4Feb 20, 202116.5 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
^{Test, Debug and Analyzer Software}
Test Tool for Connectivity Products

EXERev 12.9.2.2Oct 2, 202092.4 MBTest_Tool_12.9.2.2
Sign in required
DownloadToggle Dropdown
- Add to Queue
- Remove from Queue
- Recommended for large file sizes.
- View Queue
^{Test, Debug and Analyzer Software}
IoT Toolbox - Google Android app

HTMLRev 0May 8, 201915 KBIoT-Toolbox-Google-Android-app

Download
^{Test, Debug and Analyzer Software}
IoT Toolbox – Apple iOS app

HTMLRev 0May 8, 20196 KBIoT-Toolbox-Apple-iOS-app

Download