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Method and apparatus for battery power pre-check at system power-on

  • US 20040113496A1
  • Filed: 12/02/2003
  • Published: 06/17/2004
  • Est. Priority Date: 09/29/1998
  • Status: Active Grant
First Claim
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1. A system comprising:

  • at least one electronic component;

    a back-up battery to provide a back-up voltage supply on a back-up supply node;

    a battery check circuit to be powered by the back-up voltage supply and to determine, in response to an attempt to apply power to the at least one electronic component, whether to provide power from a battery to the at least one electronic component by comparing the battery power level to a predetermined power level.

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