我起振电容尝试过10pf以及15pf,目前用示波器看都没有对应的波形 起振电容的电压 分别为0.6V 和0.8V
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根据手册,The 32.768K XTAL should be placed closer to the QFN package. Ensure the load capacitance is tuned based on board parasitic so that the frequency tolerance is within ± 150 ppm.
另外,我们有40M晶振的频率调优文档可供参考: http://processors.wiki.ti.com/index.php/CC3100_%26_CC3200_Frequency_Tuning