KW2xD: Kinetis KW2xD-2.4 GHz 802.15.4 Wireless Radio Microcontroller (MCU) based on ARM® Cortex®-M4

The Kinetis® KW2xD wireless MCU provides a low-power, compact device with integrated IEEE 802.15.4 radio, targeting control and monitoring applications for home and building automation including appliances, access control, climate control, energy management, lighting, safety and security. The KW2xD supports Thread, a lightweight, low latency IPv6 mesh networking stack, specifically designed to meet the requirements of next generation wireless networks. More information on Thread can be found here

Kinetis® W Series KW2x MCUs Block Diagram
Recommended Documentation (3)
Name/DescriptionTypeModified Date
Kinetis® KW2x Wireless MCUs - Fact Sheet (REV 3) PDF (646.8 kB) KNTSKW2XFSFact Sheets20 Oct 2015
MKW2x Data Sheet: Supports MKW24D512V, MKW22D512V, MKW21D512V, and MKW21D256V Products (REV 2) PDF (943.1 kB) MKW2XDXXXData Sheets12 Jun 2016
MKW2x Reference Manual: Supports MKW24D512, MKW22D512, MKW21D512, and MKW21D256 (REV 3) PDF (8.1 MB) MKW2XDXXXRMReference Manuals12 Jun 2016
Data Sheets (1)
Name/DescriptionModified Date
MKW2x Data Sheet: Supports MKW24D512V, MKW22D512V, MKW21D512V, and MKW21D256V Products (REV 2) PDF (943.1 kB) MKW2XDXXX12 Jun 2016
Application Notes (15)
Name/DescriptionModified Date
Wireless Coexistence in the 2.4 GHz Band (REV 0) PDF (1.3 MB) AN518517 Sep 2015
Power Management for Kinetis® and ColdFire®+ MCUs (REV 2) PDF (1.6 MB) AN450306 Apr 2015
AN4857 - Low-Power Modes on MKW2x Family (REV 2) PDF (106.1 kB) AN485717 Oct 2014
Power supply options for Tower® development plaftorm (REV 0.1) PDF (2.6 MB) AN464923 Sep 2014
Hardware Design Considerations for MKW2x IEEE 802.15.4 Devices (REV 0.0) PDF (378.8 kB) AN495718 Jul 2014
NXP® 802.15.4 MAC Security Setup (REV 0) PDF (98.9 kB) AN497317 Jul 2014
I2C non-blocking communication (REV 0) PDF (570.5 kB) AN480321 Oct 2013
USB Mass Storage Device (MSD) Host Bootloader (REV 1) PDF (2.6 MB) AN436806 Dec 2012
USB device firmware update (DFU) for Kinetis® MCUs (REV 1) PDF (2.5 MB) AN437007 Oct 2012
Using Kinetis® DMA and GPIO to emulate timer functionality (REV 0) PDF (825.4 kB) AN441927 Sep 2012
Using CMSIS-DSP Algorithms with MQX and Kinetis® MCUs (REV 0) PDF (618.3 kB) AN448920 Mar 2012
Low-Power management with MQX RTOS on Kinetis® MCUs (REV 0) PDF (251.8 kB) AN444730 Jan 2012
Prototyping with Tower® System MCU development board (REV 0) PDF (320.9 kB) AN439011 Nov 2011
Using WinUSB with MCU integrating USB device controller (REV 0) PDF (906.8 kB) AN437820 Oct 2011
USB Mass Storage Device (MSD) Bootloader (REV 0) PDF (434.3 kB) AN437917 Oct 2011
Reference Manuals (5)
Name/DescriptionModified Date
MKW2x Reference Manual: Supports MKW24D512, MKW22D512, MKW21D512, and MKW21D256 (REV 3) PDF (8.1 MB) MKW2XDXXXRM12 Jun 2016
BeeStack®™ Software Reference Manual for ZigBee 2007 (REV 1.3) PDF (835.8 kB) BSSRMZB200720 Jan 2016
BeeStack® BlackBox ZTC Reference Manual (REV 3) PDF (7.4 MB) BSBBZTCRM18 Jan 2016
USB-KW2x Hardware Reference Manual (REV 0.3) PDF (1.0 MB) USB-KW2XHWRM30 Mar 2015
TWR-KW2x Hardware Reference Manual (REV 0) PDF (1.2 MB) TWR-KW2XHWRM26 Mar 2014
Users Guides (3)
Name/DescriptionModified Date
FRDM-KW24D512 Freedom Development Platform User’s Guide - User’s Guide (REV 1) PDF (3.4 MB) FRDMKW24DUG30 May 2016
Kinetis® ZigBee Stack Demo Applications User's Guide (REV 11) PDF (1.3 MB) KZSDAUG19 Jan 2016
OpenSDA on TWR-KW2x Users Guide (REV 1.1) PDF (442.4 kB) TKW2X_OSDAUG12 Aug 2014
Fact Sheets (1)
Name/DescriptionModified Date
Kinetis® KW2x Wireless MCUs - Fact Sheet (REV 3) PDF (646.8 kB) KNTSKW2XFS20 Oct 2015
Printed Circuit Boards for Reference Designs
Updates and Patches
Ordering Information
ProductStatusStatusBudgetary Price excluding tax(US$)Core TypeOperating Frequency (Max) (MHz)On-chip SRAM (KB)Total Flash (KByte)USBIntegrated wireless radioPackage typeAmbient Operating Temperature (Min-Max) (°C)Transmit Current (mA)Receive Current (mA)RX SensitivityRadio Protocol Supported
MKW24D512VHA5Active10K @ US$3.66ARM Cortex-M450645121 (FS)2.4GhzLGA-40 to 105
MKW21D256VHA5RActive10K @ US$2.92LGA
MKW21D512VHA5Active10K @ US$3.32ARM Cortex-M450645122.4GhzLGA-40 to 105
MKW21D256VHA5Active10K @ US$2.92ARM Cortex-M450322562.4GhzLGA-40 to 105
MKW22D512VHA5Active10K @ US$3.49ARM Cortex-M450645121 (FS)2.4GhzLGA-40 to 105
Package Information
Package DescriptionOutline VersionPackingProduct StatusPart NumberChemical ContentRoHS / Pb FreeChina RoHS LookupMSLPPT (°C)
MAPLGA 63 8*8*0.91 P0.598ASA00393DMPQ - 260 TRAYPOQ - 2600 BOXActiveMKW24D512VHA5MKW24D512VHA5.pdf3260
MPQ - 260 TRAYPOQ - 2600 BOXActiveMKW22D512VHA5MKW22D512VHA5.pdf3260
MPQ - 260 TRAYPOQ - 2600 BOXActiveMKW21D256VHA5MKW21D256VHA5.pdf3260
MPQ - 260 TRAYPOQ - 2600 BOXActiveMKW21D512VHA5MKW21D512VHA5.pdf3260
MPQ - 2000 REELPOQ - 2000 BOXActiveMKW21D256VHA5RMKW21D256VHA5R.pdf3260
MKW2x Data Sheet: Supports MKW24D512V, MKW22D512V, MKW21D512V, and MKW21D256V Products kw2xd
Wireless Coexistence in the 2.4 GHz Band kw2xd
Power Management for Kinetis® and ColdFire®+ MCUs mcf51qx
AN4857 - Low-Power Modes on MKW2x Family kw2xd
Power supply options for Tower® development plaftorm kw2xd
Hardware Design Considerations for MKW2x IEEE 802.15.4 Devices kw2xd
NXP® 802.15.4 MAC Security Setup kw2xd
I2C non-blocking communication 56f803x
USB Mass Storage Device (MSD) Host Bootloader S08JS
USB device firmware update (DFU) for Kinetis® MCUs S08JM
Using Kinetis® DMA and GPIO to emulate timer functionality kw2xd
Using CMSIS-DSP Algorithms with MQX and Kinetis® MCUs kw2xd
Low-Power management with MQX RTOS on Kinetis® MCUs kw2xd
Prototyping with Tower® System MCU development board kw2xd
Using WinUSB with MCU integrating USB device controller S08JS
USB Mass Storage Device (MSD) Bootloader S08JS
MKW2x Reference Manual: Supports MKW24D512, MKW22D512, MKW21D512, and MKW21D256 kw2xd
BeeStack®™ Software Reference Manual for ZigBee 2007 kw2xd
BeeStack® BlackBox ZTC Reference Manual kw2xd
USB-KW2x Hardware Reference Manual kw2xd
TWR-KW2x Hardware Reference Manual kw2xd
FRDM-KW24D512 Freedom Development Platform User’s Guide - User’s Guide kw2xd
Kinetis® ZigBee Stack Demo Applications User's Guide kw2xd
OpenSDA on TWR-KW2x Users Guide kw2xd
Kinetis® KW2x Wireless MCUs - Fact Sheet kw2xd
USB-KW24D512 Reference Design kw2xd
TWR-KW21D256 Reference Design kw2xd
TWR-KW24D512 Reference Design kw2xd
PExDrv v10.3 Kinetis® KW2xD Service Pack kw2xd
98ASA00393D kw2xd
MKW24D512VHA5.pdf kw2xd
MKW22D512VHA5.pdf kw2xd
MKW21D256VHA5.pdf kw2xd
MKW21D512VHA5.pdf kw2xd
MKW21D256VHA5R.pdf kw2xd