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Block specific status information in a memory device

  • US 5,353,256 A
  • Filed: 06/30/1993
  • Issued: 10/04/1994
  • Est. Priority Date: 06/30/1993
  • Status: Expired due to Term
First Claim
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1. A flash memory device, comprising:

  • a plurality of flash array blocks, each flash array block comprising a plurality of flash cells;

    block status register circuit comprising a plurality of block status registers, each block status register storing a block status for one of the flash array blocks;

    flash array controller circuit performing program and erase operations on the flash array blocks, the flash array controller maintaining the block status in each block status register;

    interface circuit enabling read access of the block status registers over a host bus.

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