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XTIrtc AI 32 kHz crystal input for RTC. If it isn’t used, it has to be High (VDDRTC).<br />XTOrtc AO 32 kHz crystal output for RTC. If it isn’t used, it has to be Float.<br />晶振引脚没问题<br /><br />RTCVDD P RTC VDD (3.0V, Input range: 1.8 ~ 3.6V)<br />This pin must be connected to power properly if RTC isn't used.<br /><br />RTCVDD应该如何接啊？怎么才算properly？ |
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