However, in common embedded system, the real-time clock interrupt will wake up the CPU rapidly and periodically even there is no other devices' interrupt. That will increase system power consumption.

但在一般的嵌入式系统中，当系统进入IDLE状态后，即使没有其他设备中断，实时时钟中断也会不断唤醒CPU，这样就会大大增加系统的功耗。

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