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Resistance change memory

  • US 9,799,385 B2
  • Filed: 03/10/2015
  • Issued: 10/24/2017
  • Est. Priority Date: 09/08/2014
  • Status: Active Grant
First Claim
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1. A resistance change memory comprising:

  • a memory cell comprising a resistance change element;

    a reference voltage generating circuit which generates a reference adjustment voltage;

    a first transistor which has a source and a drain, the drain providing a reference current in accordance with the reference adjustment voltage; and

    a sense amplifier which compares a cell current flowing through the memory cell with the reference current flowing through the first transistor,wherein the reference voltage generating circuit comprises a negative feedback circuit, the negative feedback circuit including a second transistor having a gate coupled to a gate of the first transistor, and an operational amplifier which sets a drain of the second transistor to a predetermined voltage.

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