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

KW40Z

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Note: K32W061/41 is preferred for any new Zigbee®, Thread and Bluetooth® LE 5.0 design. No new software releases planned

The KW40Z is a highly-integrated single-chip device that enables Bluetooth® Smart/Bluetooth® Low Energy v4.1 and IEEE® 802.15.4-2011 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 KW40Z MCU integrates a 2.4 GHz transceiver supporting a range of FSK/GFSK and O-QPSK modulations, an Arm® Cortex®-M0+ CPU, 160 KB Flash and 20 KB SRAM, Bluetooth Low Energy Link Layer hardware, 802.15.4 packet processor, hardware security and peripherals optimized to meet the requirements of the target applications. The KW40Z has enough on-chip memory to concurrently run both a Bluetooth Low Energy stack and an IEEE 8021.5.4 MAC/PHY for multi-mode applications.

Block Diagram

Kinetis W Series KW40Z MCUs Block Diagram

Kinetis<sup>&#174;</sup> W Series KW40Z MCUs Block Diagram
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Features

Multi-Protocol Radio

  • 2.4 GHz Bluetooth Low Energy version 4.1 Compliant
  • IEEE Std. 802.15.4-2011 Standard Compliant
  • Typical Receiver Sensitivity (Bluetooth Low Energy) = -91 dBm
  • Typical Receiver Sensitivity (802.15.4) = -102 dBm
  • Programmable Transmitter Output Power: -20 dBm to +5 dBm

Core and Memories

  • Up to 48 MHz Arm® Cortex®-M0+ core
  • On-chip 160 KB Flash memory
  • On-chip 20 KB SRAM

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 Energ Host Stack and Profiles, 802.15.4 MAC and SMAC
  • Kinetis® Software Development Kit (SDK)
  • The FreeRTOS kernel and a bare-metal non-preemptive task scheduler

Comparison Table

Kinetis KW40Z Family Recommended Solutions

Part Number Wireless Connectivity Protocol Package Size Hardware Development Tool
MKW40Z160VHT4 Bluetooth Low Energy and IEEE 802.15.4 7 mm x 7 mm x 1 mm 48-pin Laminate QFN


FRDM-KW40Z
USB-KW40Z
MKW30Z160VHM4 Bluetooth Low Energy 5 mm x 5 mm x 1 mm 32-pin Laminate QFN
MKW20Z160VHT4 IEEE 802.15.4 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

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