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Selecting right capacitor for oscillator pin used in rtc

Question asked by A2 on Nov 29, 2013
Latest reply on Nov 29, 2013 by Clive One
I am using rtc & have 32.768Khz cyrstal oscillator (not resonator). I don't have its datasheet. Neither any marking on oscillator.

I have checked AN2867 for capacitor selection i.e CL1 & CL2. But I didn't have datasheet of oscillator. What should be recommended value of capacitor to be used. Currently I am using 10pF. I don't see any problem right now. But I am not sure whether its right?

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