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Semiconductor device including a plurality of units and a control circuit for varying the power supplied to the plurality of units

  • US 7,707,442 B2
  • Filed: 01/24/2005
  • Issued: 04/27/2010
  • Est. Priority Date: 01/30/2004
  • Status: Active Grant
First Claim
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1. A semiconductor device comprising:

  • a central processing unit including a plurality of units and a control circuit;

    an antenna;

    a power supply circuit; and

    a clock generation circuit,wherein the control circuit outputs to at least one of the power supply circuit and the clock generation circuit, based on a power supply signal including data on power supply from the antenna, at least one of a first control signal for stopping power supply to at least one of the units, a second control signal for varying a power supply potential supplied to at least one of the units, and a third control signal for stopping supplying a clock signal to at least one of the units,wherein the central processing unit includes a plurality of elements, andwherein the antenna is provided over a substrate on which the plurality of elements are formed.

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