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Data storage device and flash memory control method

  • US 9,218,891 B2
  • Filed: 11/27/2013
  • Issued: 12/22/2015
  • Est. Priority Date: 11/27/2013
  • Status: Active Grant
First Claim
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1. A data storage device, comprising:

  • a FLASH memory with a storage space divided into blocks, wherein each block is further divided into pages; and

    a controller coupled to the FLASH memory to manage at least one replay-protected memory block of the FLASH memory,wherein;

    the controller programs a success flag and a write count into a system block of the FLASH memory after the controller programs two pages into the at least one replay-protected memory block of the FLASH memory;

    during a power restoration process, the controller checks the amount of programmed pages of the at least one replay-protected memory block; and

    during the power restoration process, the controller ignores the last programmed page of the at least one replay-protected memory block when there is an odd number of programmed pages of the at least one replay-protected memory block.

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