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Choice and design crystal for STM32F1xx?

Question asked by Charles on Dec 6, 2015
Latest reply on Dec 7, 2015 by waclawek.jan
I have a few questionsforthe designand choiceof crystals
1. 32.768kHz. In datasheet is Recommended load capacitance max 15pF
In AN2586 is "To avoid exceeding the maximum value of CL1 and CL2 (15 pF) it is strongly recommended to use a resonator with a load capacitance CL ≤ 7 pF. Never use a resonator with a load capacitance of 12.5 pF"
In  AN2867 is Recommended crystal resonators for LSE oscilátor EPSON FC135 Cl 6pF.  Her is datasheet FC135. Epson make only 7, 9 and 12.9pF. In my country is realisticallyavailable only 12.5pF .
I canuse itor notIuse ita little bitin itlose?

My PCB design, It is doingsomethingwrongorit woulddo somethingbetter?
Y2 is 32.768kHz  Y1 is 8MHz
Crystal2.jpg

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