query about rtc ds1307

hi sir,
i am new to this rtc ds1307 and want to know dat according to its datasheet it is battery backed....does that mean that you need not initialize it when you use it for the first time?????

and if i want to simulate it on proteus software it shows correct date and time automatically without writing it for the first time.....

i m unable to understand all this plzzz help me out....and i m sorry if i irritated you...

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  • It's really very simple:

    Forget the fact that it's a "mysterious" semiconductor chip - just think of it as a clock.
    An ordinary, battery-operated clock.

    If anyone gave you a battery-operated clock, would you just assume that it must have the correct time?

    Of course not! You'd check it - wouldn't you?!

    And you'd keep checking it from time to time - to make sure that the battery was still OK - wouldn't you?!

    And, when the battery finally died, you'd have to re-set the clock after you'd replaced the battery - wouldn't you?!

    No mystery here - just perfectly normal stuff for any battery-operated clock!

Reply
  • It's really very simple:

    Forget the fact that it's a "mysterious" semiconductor chip - just think of it as a clock.
    An ordinary, battery-operated clock.

    If anyone gave you a battery-operated clock, would you just assume that it must have the correct time?

    Of course not! You'd check it - wouldn't you?!

    And you'd keep checking it from time to time - to make sure that the battery was still OK - wouldn't you?!

    And, when the battery finally died, you'd have to re-set the clock after you'd replaced the battery - wouldn't you?!

    No mystery here - just perfectly normal stuff for any battery-operated clock!

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