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实时时钟DS1302最高能精确到多少?
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新會員
 
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请教:实时时钟DS1302最高能精确到多少?可否一天24小时误差小于1S,如果能,如何做?还有就是涓流充电是用电池好还是用电容?涓流充电是用命令控制内部二极管和电阻来充电还是直接外接二极管和电阻来充电?我现在启动了时钟给CH发了0居然还是不振荡?不知道是什么原因?
發表於: 2005/3/29 15:35
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