how to unlock the Kinetis chip?
Please refer attached document about how to unlock the Kinetis chip.
NXP FRDM-KW41Z: Freedom Development Kit for Kinetis® KW41Z/31Z/21Z MCUs
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.
Freedom Development Boards for Kinetis KW21Z, KW31Z and KW41Z MCUs. 2 boards
Technical and Functional Specifications
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Can be configured as Host or Shield for connection to Host Processor |
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Connectivity
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SMA RF Connector |
| Sensors | Onboard NXP FXOS8700CQ digital sensor, 3D Accelerometer (±2g/±4g/±8g) + 3D Magnetometer |
| Debug | OpenSDA and JTAG debug |
| Support |
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