Flash EEprom system

  • US 7,492,660 B2
  • Filed: 04/15/2003
  • Issued: 02/17/2009
  • Est. Priority Date: 04/13/1989
  • Status: Expired due to Fees
First Claim
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1. A method of accessing a flash memory array, comprising:

  • a) receiving a logical address at a controller for the flash memory array and determining that the logical address corresponds to a defective memory location;

    b) determining, at the controller, a block of the flash memory array to access based on the received logical address, the flash memory array being divided into a plurality of blocks, each block for storing data and having logical address to physical address conversion information;

    c) obtaining the conversion information from the determined block;

    d) storing the obtained conversion information for the determined block at the controller; and

    e) performing a memory access operation on the flash memory array using the controller based on the received logical address and the stored conversion information.

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