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Method and apparatus for memory array compressed data testing

  • US 5,935,263 A
  • Filed: 07/01/1997
  • Issued: 08/10/1999
  • Est. Priority Date: 07/01/1997
  • Status: Expired due to Term
First Claim
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1. A method of testing a memory device including a memory array, comprising:

  • writing data to the memory array in a predetermined pattern;

    reading data from the array;

    determining whether the read data are correct by comparing a plurality of the read data to a selected pattern;

    if the read data match the selected pattern, supplying output data to a data bus over an output interval; and

    if the read data do not match the selected pattern, providing an error indicator to the data bus during the output interval instead of providing the output data to the data bus.

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