10米Ohm resistor on XTAL32KP requirement

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Fri, 2017-10-13 21:05

SD_Michael

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10米Ohm resistor on XTAL32KP requirement

Hi,

As noted in "AN-B-061DA1468x Application hardware design guidelines_v1.5," section 5.3.2 "32.768 KHz clock", the author advises using a 10MOhm resistor from XTAL32Kp pin to ground.

Quoted Section:
"For the current DA1468x-00 and DA1468x-01 version of the chip, a 10MOHm resistor is required to be connected from the XTAL32Kp pin to ground. The next hardware revision will not need this resistor."

In our application, we are not using (and not populating) the 32.768 KHz crystal. If we are not using this crystal, I'm assuming there is no need for the 10MOhm resistor on the XTAL32Kp pin. Is this correct?

Thanks,
Michael

Keywords:

32KHz crystal

Device:

DA1468x

星期一,2017-10-16 15:08

MT_dialog

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加入:2015-06-08 11:34

Hi SD_Michael,

Yes, if you are using the RCX and not connecting an external XTAL then there is no need for a 10MOHm resistor.

Thanks MT_dialog

Mon, 2017-10-16 22:55

SD_Michael

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Thanks for your reply and

Thanks for your reply and clarification.

- Michael