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Visitor II
March 4, 2009
Question

RTC Buffer with Battery

  • March 4, 2009
  • 2 replies
  • 1001 views
Posted on March 04, 2009 at 05:21

RTC Buffer with Battery

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    2 replies

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    p_Author
    Visitor II
    March 4, 2009
    Posted on March 04, 2009 at 05:21

    Hello,

    i want to Buffer the RTC of my STR752 with a Battery. So when i take of the voltage from the whole device only the RTC (Date/Time) should go on.

    And when i put back the voltage the device should start up with the correct time and date. So i dont have to set the time and date manually after i shut down the device.

    I read in the Reference Manual about the Standby mode. But there you have to put your Controller by software command in Standby mode.

    Does anyone know how i can handle this?

    K
    Kaouther BELHADJ
    ST Employee
    May 17, 2010
    Posted on May 17, 2010 at 22:12

    You can refer to AN2100 :  STR71x Microcontroller Power Management providing different examples on how to configure STR71x low power mode. It may help.

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