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

Overview

Note: QN9090/30 is preferred for any new Bluetooth LE design. No new software releases planned

The KW31Z is an ultra-low-power, highly-integrated single-chip device that enables Bluetooth^® low energy v4.2 RF connectivity for portable, extremely low-power embedded systems. Applications include portable healthcare devices, wearable sports and fitness devices, AV remote controls, computer keyboards and mice, gaming controllers, access control security systems, smart energy and home area networks.

The KW31Z Wireless MCU integrates a 2.4 GHz transceiver supporting FSK/GFSK modulations, an Arm^® Cortex^®-M0+ CPU, up to 512 KB Flash and up to 128 KB SRAM, Bluetooth Low Energy Link Layer hardware, hardware security and peripherals optimized to meet the requirements of the target applications.

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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): 6.8/6.1 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

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

MoreLess

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): 6.8/6.1 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

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

Kinetis^® W Series KW31Z MCUs Block Diagram

Kinetis<sup>®</sup> W Series KW31Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

Kinetis^® W Series KW31Z MCUs Block Diagram
Kinetis W Series MCUs: Expanding the Possibilities

Kinetis^® W Series KW31Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

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Development Boards and Designs

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

Evaluation and 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

Evaluation and Development Boards

KW41Z Power Amplifier Reference Design

Designs

Development Boards and Designs

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

Evaluation and Development Boards

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

Evaluation and Development Boards

KW41Z Power Amplifier Reference Design

Designs

Target Applications

Industrial

Mobile

Smart Home

Technologies

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

Complementary products for your application

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Similar Products

KW30Z : Kinetis^® KW30Z-2.4 GHz Bluetooth Low Energy 4.1 Microcontroller based on Arm^® Cortex^®-M0+ QN9080SIP : Fully Certified Module Supporting Bluetooth and NFC 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 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

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.

Available Software Development Kits

HomeKit SDK for Kinetis MCUs - Full HomeKit support for home automation applications lets you communicate with and control connected accessories in a home environment.

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.

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

Overview

Features

Bluetooth Low Energy Radio Features

Core and Memories

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

Features

Bluetooth Low Energy Radio Features

Core and Memories

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

Kinetis® W Series KW31Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

Kinetis® W Series KW31Z MCUs Block Diagram

Kinetis W Series MCUs: Expanding the Possibilities

Development Boards and Designs

Development Boards and Designs

Target Applications

Industrial

Mobile

Smart Home

Technologies

Comparison Table

Kinetis KW41Z Family Solutions

Complementary products for your application

Similar Products

Similar Products

MCUXpresso Software and Tools

Available Software Development Kits

Protocol Stacks

Connectivity Software

NXP Designs: Reference Design Library

KW31Z: Kinetis^® KW31Z-2.4 GHz Bluetooth Low Energy 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

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

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

Kinetis^® W Series KW31Z MCUs Block Diagram

Kinetis^® W Series KW31Z MCUs Block Diagram