Freescale Kinetis FRDM-KW41Z


Platform Freescale Kinetis: Freescale Kinetis Microcontrollers is family of multiple hardware- and software-compatible ARM Cortex-M0+, Cortex-M4 and Cortex-M7-based MCU series. Kinetis MCUs offer exceptional low-power performance, scalability and feature integration.

Microcontroller MKW41Z512VHT4
Frequency 48MHz
Flash 512KB
Vendor Freescale


Please use frdm_kw41z ID for board option in “platformio.ini” (Project Configuration File):

platform = freescalekinetis
board = frdm_kw41z

You can override default Freescale Kinetis FRDM-KW41Z settings per build environment using board_*** option, where *** is a JSON object path from board manifest frdm_kw41z.json. For example, board_build.mcu, board_build.f_cpu, etc.

platform = freescalekinetis
board = frdm_kw41z

; change microcontroller
board_build.mcu = mkw41z512vht4

; change MCU frequency
board_build.f_cpu = 48000000L


Freescale Kinetis FRDM-KW41Z supports the next uploading protocols:

  • cmsis-dap
  • jlink
  • mbed

Default protocol is mbed

You can change upload protocol using upload_protocol option:

platform = freescalekinetis
board = frdm_kw41z

upload_protocol = mbed


Debugging - “1-click” solution for debugging with a zero configuration.


You will need to install debug tool drivers depending on your system. Please click on compatible debug tool below for the further instructions and configuration information.

You can switch between debugging Tools & Debug Probes using debug_tool option in “platformio.ini” (Project Configuration File).

Freescale Kinetis FRDM-KW41Z has on-board debug probe and IS READY for debugging. You don’t need to use/buy external debug probe.

Compatible Tools On-board Default


Name Description
Mbed Arm Mbed OS is an open source embedded operating system designed specifically for the ‘things’ in the Internet of Things. It includes all the features you need to develop a connected product based on an Arm Cortex-M microcontroller, including security, connectivity, an RTOS and drivers for sensors and I/O devices
Zephyr RTOS The Zephyr Project is a scalable real-time operating system (RTOS) supporting multiple hardware architectures, optimized for resource constrained devices, and built with safety and security in mind