Storage device and method of operating the same
AssigneeSK hynix Inc.
InventorsSeung Han Ryu, Sung Geun Kang, Hyeong Rak Kim
Life of this patent
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Abstract
A storage device includes a nonvolatile storage area including a plurality of backup memory blocks each including a plurality of memory cells respectively connected to a plurality of word lines, and a controller configured to control the nonvolatile storage area to determine a target memory block in which data is to be stored among the plurality of backup memory blocks, determine a reference word line among the plurality of word lines coupled to the target memory block, and perform a pre-conditioning operation of programming dummy data to memory cells connected to at least one of remaining word lines except for the reference word line among the plurality of word lines coupled to the target memory block.
Claims18
A storage device comprising:
- a nonvolatile storage area including a plurality of backup memory blocks each including a plurality of memory cells respectively connected to a plurality of word lines;
- and
- a controller configured to:
- control the nonvolatile storage area to determine a target memory block in which data is to be stored among the plurality of backup memory blocks,
- determine a reference word line among the plurality of word lines coupled to the target memory block, and
- perform a pre-conditioning operation of programming dummy data to memory cells connected to at least one of remaining word lines except for the reference word line among the plurality of word lines coupled to the target memory block.
A storage device comprising:
- a nonvolatile backup memory block including memory cells connected to each of a plurality of word lines;
- and
- a controller configured to perform, in response to a sudden power off, a dump operation on the memory cells connected to one of first and second word line groups divided with reference to a reference word line requiring lowest power to program data to the memory cells coupled thereto, among the plurality of word lines,
- wherein the dump operation stores the data from a volatile storage area into the memory cells of the nonvolatile backup memory block;
- and
- wherein the first and second word line groups correspond to word lines positioned below and above the reference word line, respectively.
A method of operating a controller, the method comprising:
- receiving pre-condition information;
- determining, based on the pre-condition information, a target memory block on which a dump operation is to be performed;
- performing a pre-conditioning operation on memory cells connected to word lines included between a source select line and a reference word line among word lines coupled to the target memory block;
- and
- performing, in response to a sudden power off, the dump operation on memory cells connected to word lines included between a drain select line and the reference word line among the word lines coupled to the target memory block.
Dependencies are inferred from the claim text.