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DS12887+: FAQ
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DS12887+: FAQ
DS12887+: FAQ
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DS12887 内部的电池型号是什么?
DS12887内部的电池是 BR1225。
在使用DS12887的时候,使能闹钟中断后,发现闹钟每秒钟都产生一次中断,如何才能正确设置使闹钟按照设定的时间进行中断?
DS12887的闹钟中断由器件内部的3个ALARM寄存器进行设置,这三个寄存器有两种工作模式,一种将ALARM寄存器设置为正确的时间,这样当时间寄存器中的数据和ALARM寄存器中的时间一致时,就产生中断,这种模式下,每天中断一次。另外一种工作模式是将ALARM寄存器的对应值设置为“不关心”,这样就能实现每小时/每分钟/每秒钟中断一次,目前情况应该是将ALARM寄存器的内容全部设置为“不关心”。
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