MEMORY SYSTEM AND METHOD OF CONTROLLING MEMORY SYSTEM
First Claim
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1. A memory system comprising:
- a nonvolatile memory including a plurality of blocks, each of the blocks including a plurality of word lines, each of the word lines including a plurality of memory cells, the plurality of memory cells having a storage capacity for one or more pages; and
a controller controlling the nonvolatile memory, whereinthe controller is configured to cyclically execute patrol read, the patrol read including reading data and testing the read data, the read data being data of pages connected to some of the word lines in each of the blocks.
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Abstract
According to one embodiment, a memory system includes a nonvolatile memory including a plurality of blocks, and a controller controlling the nonvolatile memory. The controller cyclically executes patrol read, the patrol read including reading data and testing the read data, the read data being data of pages connected to some of word lines in each of the blocks of the nonvolatile memory.
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Citations
20 Claims
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1. A memory system comprising:
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a nonvolatile memory including a plurality of blocks, each of the blocks including a plurality of word lines, each of the word lines including a plurality of memory cells, the plurality of memory cells having a storage capacity for one or more pages; and a controller controlling the nonvolatile memory, wherein the controller is configured to cyclically execute patrol read, the patrol read including reading data and testing the read data, the read data being data of pages connected to some of the word lines in each of the blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling a memory system including a nonvolatile memory including a plurality of blocks, each of the blocks including a plurality of word lines, each of the word lines including a plurality of memory cells, the plurality of memory cells having a storage capacity for one or more pages, the method comprising
cyclically executing patrol read, the patrol read including reading data and testing the read data, the read data being data of pages connected to some of word lines in each of the blocks.
Specification