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FRDM-K64F RTC working?

Question asked by HAIZHOU LI on Oct 15, 2014
Latest reply on Oct 15, 2014 by HAIZHOU LI

Hello there,

 

I am using FRDM-K64F as a prototype board for RTC test.  I used PE to program rtc, but the clock seems not running. I am using an oscilloscope to check the 32K crystal. I can see both the 8MHz and 25Mhz on board. But no oscillation on 32K crystal at all.

 

Has anyone worked on FRDM-K64F RTC before? I had three FRDM boards and none has oscillation. Do I need pop those caps and resistors based on the schematics

 

Thanks!

 

Haizhou

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