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System oscillator will not start

Question asked by Ove-Anders Gaarder Aune on Dec 8, 2015
Latest reply on Dec 9, 2015 by Ove-Anders Gaarder Aune

Using the FRDM-K22F ( MK22FN512VLH12 ), and trying to use the external crystall.


After setting up the HGO = 1, Range = 1 and EREFS = 1, and selecting CLKS = 2 I would assume that the oscillator should start, but nothing happens.


I have verified that R57 is not present on the PCB.