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MEMORY SYSTEM AND METHOD OF CONTROLLING NONVOLATILE MEMORY

  • US 20160266826A1
  • Filed: 09/03/2015
  • Published: 09/15/2016
  • Est. Priority Date: 03/10/2015
  • Status: Active Grant
First Claim
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1. A memory system comprising:

  • a nonvolatile memory including a plurality of blocks, the plurality of blocks including at least one first block and a plurality of second blocks, the first block including a plurality of first memory cells, data of one bit being written to each of the first memory cells, each of the plurality of second blocks including a plurality of second memory cells, data of two bits or more being written to each of the second memory cells; and

    a controller configured towrite first data requested to be written from a host into either the first block or a third block among the plurality of second blocks,calculate a first value in response to a first command transmitted from the host in a case where data is not written up to a final page of the third block, the first command being a command for committing the data requested to be written, the first value representing an amount or a data ratio of data written into the third block andwrite the first data written into the first block up to a final page of the third block in a case where the first value is a first threshold or more.

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