Demoboard FRDM-KW41Z

Freedom Development Kit for Kinetis® KW41Z/31Z/21Z MCUs

Topology: Other


The FRDM-KW41Z is a development kit enabled by the Kinetis® W series KW41Z/31Z/21Z (KW41Z) family built on Arm® Cortex®-M0+ processor with integrated 2.4 GHz transceiver supporting Bluetooth® Smart/Bluetooth®Low Energy (BLE) v4.2, Generic FSK, IEEE® 802.15.4 and Thread.The FRDM-KW41Z kit contains two Freedom boards that can be used as a development board or a shield to connect to a host processor. The FRDM-KW41Z is form-factor compatible with the Arduino® Rev3 pin layout for more expansion options.The FRDM-KW41Z highly-sensitive, optimized 2.4 GHz radio features a PCB F-antenna which can be bypassed to test via SMA connection, multiple power supply options, push/capacitive touch buttons, switches, LEDs and integrated sensors.The FRDM-KW41Z platform is now supported by Arm® Mbed™ OS and Zephyr™ OS, both open source embedded operating systems for developing the Internet of Things.


  • 2.4 GHz Bluetooth Low Energy ver. 4.2 compliant supporting up to 2 simultaneous hardware connections
  • IEEE Std. 802.15.4 compliant with dual-PAN support
  • Generic FSK modulation • Data Rate: 250, 500 and 1000 kbps • Modulations: GFSK BT = 0.3, 0.5, 0.7; FSK/MSK
  • Modulation Index: 0.32, 0.5, or 0.7
  • Typical Receiver Sensitivity (BLE) =
  • 95 dBm
  • Typical Receiver Sensitivity (802.15.4) =
  • 100 dBm
  • Typical Receiver Sensitivity (250 kbps GFSK-BT=0.5, h=0.5) =
  • 100 dBm
  • Prog Transmitter Output Power:
  • 30 dBm to 3.5 dBm
  • Low external component counts for low cost application
  • On-chip balun with single ended bidirectional RF port


  Order Code SPEC Product series L
RDC typ.
Montageart Samples
744025100 PDF WE-TPC SMT Tiny Power Inductor 10 1 1.1 170 41 SMT

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