KINETIS KW41Z/31Z/21Z WIRELESS MCU FAMILY BLOCK DIAGRAM

Memories

Transceiver

System

Core

Analog

Clocks

Security

Communications

Timers

AES-128

True Random

Number Generator

2 x SPI

2 x I2C

Internal and

External Watchdogs

DMA

DC-DC Converter

Internal Reference

Clocks

Low-/High-

Frequency Osc.

Low-Leakage

Wake-Up Unit

FlexTimers

Programmable

Delay Block

Independent Real-

Time Clock

Periodic Interrupt

Timers

Low-Power Timer

ARM® Cortex®-M0+

48 MHz

Debug

Interfaces

Interrupt

Controller

Up to 512 KB

Flash

Up to 128 KB

SRAM

16-bit ADC

12-bit DAC

Balun

LPUART

GPIO w/ IRQ

Capabilities

Frequency-Locked

Loop

BLE 4.2 and

802.15.4 radio

6-bit ACMP

TSI

CMT

KINETIS KW41Z/31Z/21Z WIRELESS MCU FAMILY BLOCK DIAGRAM

KW41Z/31Z/21Z MCUs offer multi-

protocol support which allow the

system to concurrently operate in an

802.15.4 based network, like Thread,

and a BLE network, eliminating the need

for multiple radios, reducing system

complexity and cost. With up to 512 KB

of flash and up to 128 KB of SRAM on

chip, KW41Z/31Z/21Z MCUs provide

the ultimate option for running all your

connectivity needs in a single device.

Take advantage of the robust enablement

package that includes the BLE host stack,

generic FSK, Thread® stack, 802.15.4

MAC and Simple MAC (SMAC) software

protocol stacks, RTOS, development

tools and IDEs. These tools are designed

for use with Kinetis KW41Z/31Z/21Z

MCUs and are fully integrated in the

Kinetis software development kit (KSDK).

ENABLEMENT

}

Freedom development board

}

USB dongle for sniffer applications

or connection to PC

}

BLE v4.2 host

stack and application profiles

}

Generic FSK at 250, 500 and

1000 kbit/s

}

802.15.4 MAC/PHY support

}

Thread® network stack

}

Support for host MCU and MPU

(Linux®) processors

}

Support for IAR Embedded

Workbench® and Kinetis Design

Studio (KDS) IDEs

}

Full integration with Kinetis SDK

}

Multiple reference designs

}

Support for multiple RTOSes

including FreeRTOS™

KINETIS KW41Z/31Z/21Z FAMILY

Features

Benefits

Dual-mode concurrent BLE and 802.15.4 radio

capability with Kinetis® KW41Z MCUs

Supports concurrent operations in a single chip

between an 802.15.4 and BLE network lowering

system cost and complexity

6.8 mA typical Rx and 6.1 mA Tx current with DC-DC

activated

Significantly reduces power consumption and

extends battery life

-95 dBm typical BLE sensitivity

-100 dBm typical generic FSK (at 250 kbit/s) sensitivity

-100 dBm typical 802.15.4 sensitivity

+3.5 dBm maximum output power

High link budget improves range and lowers cost

by reducing the need for external power amplifiers

Integrated balun enables smaller design and

reduces system costs

Excellent selectivity and blocking

Significantly improves operation in harsh

2.4 GHz environments such as condominiums and

apartments

48 MHz ARM® Cortex®-M0+ core

Up to 512 KB flash memory

Up to 128 KB SRAM

High-performance, low-power core with adequate

memory to run BLE, generic FSK and Thread®

protocol stacks and application

AES-128 accelerator

True random number generator

Fast encryption/decryption utilizing hardware

security algorithms for network commissioning and

transmissions of supported protocols

Buck-boost DC-DC converter working from 0.9 V to

4.2 V

Supports a wide range of batteries from single

alkaline or coin-cell to Lithium-ion

16-bit analog-to-digital converter (ADC)

12-bit digital-to-analog converter (DAC)

6-bit high-speed analog comparator (CMP)

Supports high-performance on-chip analog at

the MCU level for sensor aggregation and other

sophisticated applications

Small 7 x 7 laminate QFN

Smaller size and low component count reduces cost

Fast antenna diversity for 802.15.4

Allows the hardware to automatically select

between two antennas, improving reliability in

high-interference environments

Compatible with NXP MCU family

Software protocol stacks, tools and IDE are

compatible with Kinetis MCUs, and integrated

in the Kinetis software development kit (KSDK)