KW21Z: Kinetis^® KW21Z-2.4 GHz 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm^® Cortex^®-M0+ Core

Overview

The KW21Z is an ultra-low-power, highly-integrated single-chip device that enables IEEE^® 802.15.4 RF connectivity for portable, extremely low-power embedded systems. Applications include portable healthcare devices, access control, security systems, smart energy and home area networks.

The KW21Z Wireless MCU integrates a 2.4 GHz transceiver supporting O-QPSK modulations, an Arm^® Cortex^®-M0+ CPU, up to 512 KB Flash and up to 128 KB SRAM, 802.15.4 packet processor, hardware security and peripherals optimized to meet the requirements of the target applications. The KW21Z is an ideal solution for single-chip Thread and Zigbee devices including routers and end devices as well as border routers and Coordinators when adding connectivity for communicating with the cloud.

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Features

802.15.4 Radio Features

IEEE^® Std. 802.15.4-2011 Standard Compliant
Typical Receiver Sensitivity (802.15.4) = -100 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): 6.8/6.1 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

Thread

Zigbee 3.0

Kinetis^® Software Development Kit (SDK)

FreeRTOS kernel and a bare-metal non-preemptive task scheduler

Support for MCUXpresso and IAR

MoreLess

Features

802.15.4 Radio Features

IEEE^® Std. 802.15.4-2011 Standard Compliant
Typical Receiver Sensitivity (802.15.4) = -100 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): 6.8/6.1 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

Thread

Zigbee 3.0

Kinetis^® Software Development Kit (SDK)

FreeRTOS kernel and a bare-metal non-preemptive task scheduler

Support for MCUXpresso and IAR

Data Sheets

Application Notes

Sample

Kinetis^® W Series KW21Z MCUs Block Diagram

Kinetis<sup>®</sup> W Series KW21Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

Kinetis^® W Series KW21Z MCUs Block Diagram
Kinetis W Series MCUs: Expanding the Possibilities

Kinetis^® W Series KW21Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

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Development Boards

FRDM-KW41Z : Freedom Development Kit for Kinetis<sup>®</sup> KW41Z/31Z/21Z MCUs thumbnail

FRDM-KW41Z:Freedom Development Kit for Kinetis^® KW41Z/31Z/21Z MCUs

USB-KW41Z : Bluetooth Low Energy/IEEE<sup>®</sup> 802.15.4 Packet Sniffer/USB Dongle thumbnail

USB-KW41Z:Bluetooth Low Energy/IEEE^® 802.15.4 Packet Sniffer/USB Dongle

Development Boards

FRDM-KW41Z:Freedom Development Kit for Kinetis^® KW41Z/31Z/21Z MCUs

USB-KW41Z:Bluetooth Low Energy/IEEE^® 802.15.4 Packet Sniffer/USB Dongle

Target Applications

Industrial

Smart City

E-Bike

Smart Home

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

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Similar Products

KW40Z : Kinetis^® KW40Z-2.4 GHz Dual Mode: Bluetooth Low Energy and 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm^® Cortex^®-M0+ Core KW20Z : Kinetis^® KW20Z-2.4 GHz 802.15.4 Wireless Radio Microcontroller based on Arm^® Cortex^®-M0+ KW41Z : Kinetis^® KW41Z-2.4 GHz Dual Mode: Bluetooth^® Low Energy and 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm^® Cortex^®-M0+ Core KW2xD : Kinetis^® KW2xD-2.4 GHz 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm^® Cortex^®-M4 Core

KW21Z: Kinetis® KW21Z-2.4 GHz 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm® Cortex®-M0+ Core

Overview

Features

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 Thread Zigbee 3.0 Kinetis® Software Development Kit (SDK) FreeRTOS kernel and a bare-metal non-preemptive task scheduler Support for MCUXpresso and IAR

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 Thread Zigbee 3.0 Kinetis® Software Development Kit (SDK) FreeRTOS kernel and a bare-metal non-preemptive task scheduler Support for MCUXpresso and IAR

Kinetis® W Series KW21Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

Kinetis® W Series KW21Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

Development Boards

Development Boards

Target Applications

Industrial

Smart City

Smart Home

Comparison Table

Kinetis KW41Z Family Solutions

Complementary products for your application

Similar Products

Similar Products

KW21Z: Kinetis^® KW21Z-2.4 GHz 802.15.4 Wireless Radio Microcontroller (MCU) based on Arm^® Cortex^®-M0+ Core

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

Thread

Zigbee 3.0

Kinetis^® Software Development Kit (SDK)

FreeRTOS kernel and a bare-metal non-preemptive task scheduler

Support for MCUXpresso and IAR

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

Thread

Zigbee 3.0

Kinetis^® Software Development Kit (SDK)

FreeRTOS kernel and a bare-metal non-preemptive task scheduler

Support for MCUXpresso and IAR

Kinetis^® W Series KW21Z MCUs Block Diagram

Kinetis^® W Series KW21Z MCUs Block Diagram