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Circuit for detecting refresh address signals of a semiconductor memory device

  • US 5,299,168 A
  • Filed: 04/22/1993
  • Issued: 03/29/1994
  • Est. Priority Date: 04/22/1992
  • Status: Expired due to Term
First Claim
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1. A semiconductor memory device having a self-refresh function, comprising:

  • a memory cell array including a plurality of memory cells;

    selection means for selecting certain of said memory cells;

    a refresh control circuit for generating a refresh clock;

    a refresh address counter for successively generating a predetermined plurality of refresh addresses in response to said refresh clock;

    means for applying said successive refresh addresses to said selection means; and

    a refresh address test circuit which receives said successive refresh addresses to detect whether said predetermining plurality of refresh addresses has been generated.

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