Nonvolatile memory device including memory area storing information used for searching erased page, data storage device including the same, and operating method thereof

摘要

A data storage device includes a nonvolatile memory device including: memory cells of a first area grouped by page, and memory cells of a second area respectively corresponding to pages, and suitable for storing information representing whether each page of the first area is in an erased state; and a controller suitable for providing the nonvolatile memory device with a search command for searching an erased page and a search address of a page, wherein the nonvolatile memory device provides the controller with a state of at least one memory cell of the second area corresponding to the search address in response to the search command.

主权项

1. A data storage device comprising:
a nonvolatile memory device including: memory cells of a first area grouped by page, and memory cells of a second area respectively corresponding to pages, and suitable for storing information representing whether each page of the first area is in an erased state; and a controller suitable for providing the nonvolatile memory device with a search command for searching an erased page and a search address of a page, wherein the nonvolatile memory device, in response to the search command, performs a read operation only on the memory cells of the second area corresponding to the search address, and provides the controller with a result of the read operation.