NXP Semiconductors
PCF2127
Accurate RTC with integrated quartz crystal for industrial applications
8.10 Alarm function
When one or more of the alarm bit fields are loaded with a valid second, minute, hour, day,
or weekday and its corresponding alarm enable bit (AE_x) is logic 0, then that information
is compared with the actual second, minute, hour, day, and weekday (see Figure 21).
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(1) Only when all enabled alarm settings are matching.
Fig 21. Alarm function block diagram
The generation of interrupts from the alarm function is described in Section 8.13.5.
PCF2127
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 19 December 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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