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KE06Z Oscillator not working on custom board

Question asked by Steven Lutz on Jan 5, 2019
Latest reply on Jan 8, 2019 by Robin_Shen

I've just assembled a custom board for a LQFP-44 package KE06Z chip. When I assembled everything, I put a scope on the oscillator to find that it's not oscillating. I used the FRDM-KE06Z as a reference design. This was a preliminary check and I have not actually tried flashing the chip yet. But my main question is if the oscillator should operate prior to flashing being that Xtal and EXTAL are the defaults for the pins 9 and 10 which using. 

Where do the defaults in the datasheet actually come from? are they defauls in the SDK or are they defaults hardcoded in the chip from the factory?


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