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Electronic control unit and method measuring and using electric power-off period

  • US 20020002429A1
  • Filed: 06/06/2001
  • Published: 01/03/2002
  • Est. Priority Date: 06/29/2000
  • Status: Active Grant
First Claim
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1. An electronic control unit comprising:

  • a control part which operates or stops in accordance with state of a first power voltage switched by a power supply switch; and

    a timing part which operates with a second power voltage different from the first power voltage of the control part and measures time continuously irrespective of whether the control part is operating or stopped, wherein the control part determines whether the timing part has been reset by monitoring supply of the second power voltage to the timing part.

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