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Thread: External Crystal on Teensy LC with MCUXpresso IDE

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  1. #1
    Junior Member
    Join Date
    Feb 2019
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    2

    External Crystal on Teensy LC with MCUXpresso IDE

    Hi all,

    I have been working on creating an HelloWorld project with MCUExpresso IDE on the TeensyLC.
    I am able to make the LED blink with the internal 4MHz oscillator but when changing to the external 16MHz crystal I could not make it work.
    From the datasheet of the MKL26 MCU I can see:
    Click image for larger version. 

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    It looks like for fast crystals the internal caps cannot be used and PCB caps needs to added on the PCB which is not the case as seen in the TeensyLC schematic:
    Click image for larger version. 

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    This is how I configured to used the external 16MHz crystal:
    Click image for larger version. 

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    Is it sure no external caps needs to be used for the TeensyLC crystal?
    Anybody able to make the external crystal work?
    Something special to configure?

    I attached the working project with internal oscillator if anybody needs.

    Thanks to all of you in advance!

    Guillaume
    Attached Files Attached Files

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