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.

Buy/Parametrics

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Documentation

Quick reference to our documentation types

1-10 of 12 documents

Compact List

FRDM-KW41Z RF System Evaluation Report for 802.15.4 Applications[AN11999]

PDFMar 16, 2018Rev 1.2
Hardware Design Considerations for MKW41Z/31Z/21Z BLE and IEEE 802.15.4 Devices[AN5377]

PDFDec 8, 2017Rev 2
FRDM-KW41Z RF System Evaluation Report for BLE Applications[AN12059]

PDFNov 12, 2017Rev 1

MKW41Z/31Z/21Z Data Sheet[MKW41Z512]

PDFApr 5, 2018Rev 4

Mask Set Errata for Mask 1N16S[KINETIS_W_1N16S]

PDFAug 26, 2019Rev 25 JUL 2019

Kinetis^® KW41Z/31Z/21Z Wireless MCUs - Fact Sheet[KNTSKW41Z31Z21ZFS]

PDFFeb 27, 2020Rev 5

MKW41Z/31Z/21Z Reference Manual[MKW41Z512RM]

PDFApr 5, 2018Rev 3

FRDM-KW41Z Quick Start Guide[FRDMKW41ZQRG]

PDFOct 21, 2019Rev 4
FRDM-KW41Z Freedom Development Board User's Guide[FRDMKW41ZUG]

PDFAug 8, 2018Rev 1
FRDM-KW41Z Freedom Development Board[FRDMKW41ZUGvC2]

PDFMay 20, 2018Rev 1
IoT Toolbox Mobile Application User Manual[UM11087]

PDFDec 19, 2017Rev 0
USB-KW41Z Sniffer/Development Board User's Guide[USBKW41ZUG]

PDFJan 3, 2017Rev 1

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

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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
Active

FRDM-KW41Z
Emulators, Probes, and Programmers
Universal Multilink Development Interface
Active

UMultilink
Emulators, Probes, and Programmers
PEmicro Cyclone programmer
Active

CYCLONE
Additional hardware available. View our featured partner solutions.
Emulators, Probes, and Programmers
PEmicro Cyclone FX programmer

CYCLONE-FX
Emulators, Probes, and Programmers
LPC-Link2
Active

OM13054
Emulators, Probes, and Programmers
Universal Multilink FX High-Speed Development Interface
Active

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

USB-KW41Z
Reference Design
KW41Z Power Amplifier Reference Design

KW41Z-PA-RD

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1-5 of 14 hardware offerings

Test Accessories and Debugger
Flasher Compact

Flasher Compact is the compact twin to the Flasher PRO, primarily designed for installation into production rigs or automated test equipment (ATE) where production space ...

By SEGGER Microcontroller GmbH Gold Partner
Test Accessories and Debugger
Multilink Debug Probes

Multilink debug probes are BDM/JTAG debug probes for various NXP devices. Universal models support SWO debug in NXP's MCUXpresso IDE. FX model features high-speed com...

By P & E Microcomputer Systems, Inc 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
Flasher Hub-12

The Flasher Hub-12 controls up to 12 Flasher Compacts so that they program simultaneously, creating a powerful gang programmer for efficient high-speed parallel programmi...

By SEGGER Microcontroller GmbH Gold Partner
Test Accessories and Debugger
J-Link ULTRA+

The J-Link ULTRA+ is three times faster than the industry standard J-Link, at a 3 MBytes/s download speed to RAM. It comes complete with J-Flash, and Unlimited Flash Brea...

By SEGGER Microcontroller GmbH Gold Partner
Test Accessories and Debugger
Cyclone Production Programmers

Programmer for stand-alone (or cloud-connected) in-circuit flash programming, debug, & test of many NXP MCUs. Sophisticated power mgmt & dynamic data. FX line off...

By P & E Microcomputer Systems, Inc Gold Partner
Test Accessories and Debugger
Flasher Portable PLUS

Flasher Portable PLUS is an extremely portable flash programmer, specifically designed to meet the needs of production-grade flash programming in the field.

By SEGGER Microcontroller GmbH Gold Partner
Test Accessories and Debugger
J-Link PRO PoE

J-Link PRO PoE is a specialized programming / debug probe for creating test farms. It can draw power via Ethernet and supplies power to the target either via debug interf...

By SEGGER Microcontroller GmbH 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
Flasher PRO

Flasher PRO is SEGGER’s “almost-anything” flash programmer for microcontrollers, SoCs, and (Q)SPI flashes.

By SEGGER Microcontroller GmbH Gold Partner
Test Accessories and Debugger
TRACE32® Debug and Trace tools for Arm®-based NXP MPUs/MCUs

TRACE32® provides a complete suite of tools for all NXP's Arm®-based microprocessors. All of these provide unparalleled levels of debug capabilities to get the best o...

By Lauterbach GmbH Gold Partner
Test Accessories and Debugger
Green Hills ProbeUPDATED

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

By Green Hills Software Platinum Partner
Test Accessories and Debugger
TRACE32® CombiProbe 2 Compact Trace for NXP Microcontrollers

CombiProbe 2 enables full insight into what an embedded system is doing at run-time. Besides its comprehensive debug capabilities, the trace simplifies system profiling o...

By Lauterbach GmbH Gold Partner
Test Accessories and Debugger
TRACE32® PowerDebug System for NXP Microcontrollers/Microprocessors

PowerDebug is Lauterbach's powerful, modular, flexible debug system. It provides the broadest coverage of supported chips and core architectures in the embedded i...

By Lauterbach GmbH Gold Partner

Show All

To find additional partner offerings that support this product, visit our Partner Marketplace.

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

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Connectivity Software
Test Tool for Connectivity Products

EXERev 12.9.2.2Oct 2, 2020 08:29:0092.4 MBTest_Tool_12.9.2.2

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Connectivity Software
Kinetis KW41Z Connectivity Software Linux

TGZRev 1.0.2Nov 16, 2016 00:00:00157733 KBKW41Z-CONNECTIVITY-SOFTWARE-LIN

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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

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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

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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

Consumer

Industrial

Buy/Parametrics

Documentation

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Application Note (3)

FRDM-KW41Z RF System Evaluation Report for 802.15.4 Applications[AN11999]

Hardware Design Considerations for MKW41Z/31Z/21Z BLE and IEEE 802.15.4 Devices[AN5377]

FRDM-KW41Z RF System Evaluation Report for BLE Applications[AN12059]

Data Sheet (1)

MKW41Z/31Z/21Z Data Sheet[MKW41Z512]

Errata (1)

Mask Set Errata for Mask 1N16S[KINETIS_W_1N16S]

Fact Sheet (1)

Kinetis® KW41Z/31Z/21Z Wireless MCUs - Fact Sheet[KNTSKW41Z31Z21ZFS]

Reference Manual (1)

MKW41Z/31Z/21Z Reference Manual[MKW41Z512RM]

User Guide (5)

FRDM-KW41Z Quick Start Guide[FRDMKW41ZQRG]

FRDM-KW41Z Freedom Development Board User's Guide[FRDMKW41ZUG]

FRDM-KW41Z Freedom Development Board[FRDMKW41ZUGvC2]

IoT Toolbox Mobile Application User Manual[UM11087]

USB-KW41Z Sniffer/Development Board User's Guide[USBKW41ZUG]

Design Resources

Design Files

Filter by

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

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Hardware

Filter By

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

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Green Hills ProbeUPDATED

Software

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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

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C/C++ OPTIMIZING COMPILERUPDATED

Engineering Services

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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

Kinetis^® KW41Z/31Z/21Z Wireless MCUs - Fact Sheet[KNTSKW41Z31Z21ZFS]

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