ZHCS488K October 2011 – December 2018 AM3351 , AM3352 , AM3354 , AM3356 , AM3357 , AM3358 , AM3359
PRODUCTION DATA.
请参考 PDF 数据表获取器件具体的封装图。
Figure 6-17 shows the recommended oscillator connections when OSC1 of the ZCE package is not used and Figure 6-18 shows the recommended oscillator connections when OSC1 of the ZCZ package is not used. An internal 10-kΩ pullup on the RTC_XTALIN terminal is turned on when OSC1 is disabled to prevent this input from floating to an invalid logic level which may increase leakage current through the oscillator input buffer. OSC1 is disabled by default after power is applied. Therefore, both RTC_XTALIN and RTC_XTALOUT terminals should be a no connect (NC) when OSC1 is not used.