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Semiconductor device and communications terminal and automobile having the same

  • US 20060097748A1
  • Filed: 11/08/2005
  • Published: 05/11/2006
  • Est. Priority Date: 11/08/2004
  • Status: Active Grant
First Claim
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1. A semiconductor device operating at any predetermined frequency among a plurality thereof, and having a plurality of power source networks that supply power from a power source to functional units in the semiconductor device, comprising:

  • a switching unit respectively provided along said plurality of power source networks for switching ON/OFF the supply of power from the power source to said functional units;

    a storage unit configured to map and store each of said plurality of predetermined frequencies and switching information designating an ON state or an OFF state of said switching unit; and

    a control unit configured to read, from said storage means, switching information corresponding to a current operating frequency, and control the ON/OFF switching of said switching means in accordance with the read switching information.

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