NXP single-chip wireless solution

NXP's Kinetis KW41Z MCUs

As the IoT expands and more devices become connected, it is becoming increasingly apparent that IoT devices will likely operate not in a single wireless network, but instead across multiple wireless networks. The new Kinetis KW41Z MCU is the industry's first single-chip multi-protocol wireless MCU supporting both Bluetooth®low energy v4.2 and Thread mesh networking which runs on an 802.15.4 radio. The Kinetis KW41Z MCU comes loaded with memory – as much as 512KB Flash and 128KB SRAM. The extended memory allows multiple network stacks—BLE and Thread—to run on a single device, enabling developers to design true multi-protocol IoT devices. This multi-mode capability enables direct communication using BLE via a mobile device or tablet and communication in a mesh network for local and remote control/monitoring. With the Kinetis KW41Z  MCU solution, the IoT solution becomes simpler to design, while yielding a more advanced user experience.

Product Summary

The Kinetis KW41Z MCU family supports true multi-protocol single-chip designs, capable of running two stacks concurrently, by integrating a 2.4 GHz transceiver that enables the use of BLE v4.2 and IEEE 802.15.4 (Thread).

Built on the ARM® Cortex® -M0+ core, with up to 512 KB of Flash and up to 128 KB of SRAM, ultra low-power radio and standby currents, highly-integrated connectivity, security and analog capabilities, make it the ideal solution for portable, battery powered applications.

There are three new devices in the Kinetis KW41Z MCU family that all have the same features and specifications, but support different radio protocols:

  • Kinetis KW41Z MCUs supports BLE, BLE Mesh, IPv6 over BLE, Generic FSK and IEEE 802.15.4 (Thread)
  • Kinetis KW31Z MCUs supports BLE, BLE Mesh, IPv6 over BLE and Generic FSK
  • Kinetis KW21Z MCUs supports 802.15.4 MAC/PHY (Thread) and Simple MAC

Development / Software

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).

FRDM-KW41Z: Bluetooth Low Energy and IEEE 802.15.4

Start to evaluate and/or develop wireless applications with the NXP Freedom development platform. Everything needed to quickly establish a wireless connection between the two included boards, as well as benefit from example projects available for the kit, at nxp.com.

USB-KW41Z: Wireless Packet Sniffer – USB Dongle

The USB dongle can be used as a wireless sniffer to monitor the wireless communication packets in the targeted network. Simply connect to a PC and install the required monitoring software, as explained in the available quick start guide. Alternatively, the USB dongle can be used as a wireless node with an easy connection to a PC or other USB-enabled device.

Electrical Characteristics Contact Features
Contact Voltage Rating(VAC) 250 Terminal Type PCB-SMT
Contact Voltage Rating(VDC) 220 Contact Current Rating(A) 2
Coil Power Rating (DC)(mW) 140 Contact Arrangement 2 Form C (CO)
Insulation Initial Resistance(MΩ) 1000000 Contact Material PdRu
Coil Voltage Rating(VAC) 5 Contact Number of Poles 2

Supported Software

  • BLE host stack and profiles
  • BLE mesh stack
  • Generic FSK stack at 250, 500 and 1000 kbps
  • Thread network stack
  • Thread + BLE combo (concurrent/time slice) stack
  • 802.15.4 MAC and SMAC
  • Support for host MCU and MPU (Linux®) processors
  • Support for Kinetis Design Studio (KDS) and IAR IDEs
  • Kinetis software development kit (KSDK)
  • FreeRTOS

Target Applications

  • Kinetis KW41Z/31Z/21Z MCUs are appropriate for a number of connected IoT applications. Target devices include:
  • Portable home and commercial/industrial automation
  • Healthcare devices
  • Wearable sports and fitness devices
  • AV remote controls
  • Computer peripherals
  • Access control/ security systems
  • Smart energy networks
  • Kinetis KW41Z/KW31Z/KW21Z MCU Family Block Diagram


Kinetis KW41Z MCUs - single-chip wireless solution

ARM Cortex-M0+ based MCUs capable of supporting Bluetooth® low energy (BLE) v4.2 and IEEE® 802.15.4 (Thread), for portable, secure, battery powered applications.