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Semiconductor memory device

  • US 8,514,642 B2
  • Filed: 01/13/2011
  • Issued: 08/20/2013
  • Est. Priority Date: 01/20/2010
  • Status: Expired due to Fees
First Claim
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1. A semiconductor memory device comprising:

  • a memory cell array comprising memory cells arranged in matrix, the memory cell array including a main memory region and a redundant memory region;

    a driver circuit configured to drive the memory cell array; and

    a memory controller configured to control operation of the driver circuit,wherein the memory controller comprises;

    a memory portion configured to store address data of a defective memory cell in the main memory region;

    a redundant address storage portion configured to store address data of the redundant memory region; and

    a selector configured to select the address data of the redundant memory region stored in the redundant address storage portion instead of the address data of the defective memory cell stored in the memory portion.

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