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Memory systems

  • US 9,489,301 B2
  • Filed: 04/07/2014
  • Issued: 11/08/2016
  • Est. Priority Date: 09/28/2001
  • Status: Expired due to Term
First Claim
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1. A memory system comprising:

  • a volatile memory;

    a non-volatile memory arranged in blocks; and

    a controller coupled to the volatile memory and to the non-volatile memory, the controller configured to maintain, in the volatile memory, a list of addresses of erased blocks of the non-volatile memory;

    wherein the controller is further configured to transfer the list of addresses of erased blocks of the non-volatile memory from the volatile memory to the non-volatile memory when the list is updated to contain a predetermined number of list entries; and

    wherein the predetermined number of list entries is greater than one.

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