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Integrated circuit with separate supply voltage for memory that is different from logic circuit supply voltage

  • US 8,098,534 B2
  • Filed: 06/01/2010
  • Issued: 01/17/2012
  • Est. Priority Date: 07/01/2005
  • Status: Active Grant
First Claim
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1. An integrated circuit comprising:

  • at least one logic circuit supplied by a first supply voltage during use, wherein a first voltage domain corresponds to the first supply voltage; and

    at least one memory circuit coupled to the logic circuit and supplied by a second supply voltage during use, wherein a second voltage domain corresponds to the second supply voltage, and wherein the memory circuit comprises one or more circuits that interface with the logic circuit, and wherein the one or more circuits are configured to level shift at least one signal between the first voltage domain and the second voltage domain, and wherein a magnitude of the first supply voltage is less than a magnitude of the second supply voltage at least a portion of the time during use, and wherein the logic circuit is configured to read and write the memory circuit.

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