Hi, i have a customer board using ke02z64xxx4 with a 10M osc, but it cann't startup in FEE mode until you touch it using hand,
Does anyone met the same problem ? how can i find out what reason cause this problem?
try to put a 1Mohm resistor in parallel to the oscillator (between Extal and Xtal)
Make sure the high-/low gain mode is correctly set in OSC_CR
OSC_CR_HGO should be used with high loading and a feedback resistor but should not be set when there is no feedback resistor.
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In this case I would like to recommend the following documentation in order to improve your application:
1. Crystal Oscillator Troubleshooting Guide
2. Microcontroller Oscillator Circuit Design Considerations
Hope this material will be useful for you.
Have an excellent day
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