打算用到外部时钟,这里该如何接了,我看到一句话
那么是不是需要单片机的I/O口要连到XTAL1上才行了??
正确的接法是不是Xtal1和XTAL2间接个晶振,然后还需要单片机一个口线接到XTAL1? 单片机给什么信号能让它用外部晶振了?给高?? 因为XTAL1接低的话 就是内部晶振工作了
在线等回答谢谢
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