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SEMICONDUCTOR DEVICE AND VARIATION INFORMATION OBTAINING PROGRAM

  • US 20130257547A1
  • Filed: 03/03/2013
  • Published: 10/03/2013
  • Est. Priority Date: 03/30/2012
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • an oscillation circuit outputting an output signal having predetermined frequency; and

    a control circuit outputting a current set value which switches operation current of the oscillation circuit between a first current value and a second current value,wherein the control circuit obtains first frequency information related to frequency of the output signal in a state where the operation current is set to the first current value and second frequency information related to frequency of the output signal in a state where the operation current is set as the second current value, and obtains manufacture variation information of a circuit element as a component of the oscillation circuit on the basis of a difference value between the first and second frequency information.

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