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In DS12887, what is correct about the UIP bit of the register A?

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In DS12887, what is correct about the UIP bit of the register A?

(a) it is a read only bit

(b) it is used to know about the result

(c) it is used to select the DS12887 datasheet

(d) all of the mentioned

This question was posed to me during an interview.

I need to ask this question from Interfacing with RTC topic in division 8051 Microcontroller of Microcontroller

1 Answer

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Correct choice is (a) it is a read only bit

The best I can explain: In DS12887, UIP bit of register A stands for Update In Progress. The update-in-progress (UIP) bit is a status flag i.e. read-only bit.

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