Nonvolatile memory device and method of operating the same
AssigneeHynix Semiconductor Inc.
InventorSeok Jin Joo
Life of this patent
Estimating the term…
Abstract
A method of operating a nonvolatile memory device comprises performing a read operation to read data stored in a first memory cell block including first unit groups; detecting a second unit group from among the first unit groups, the second unit group having a number of error bits included in the read data, which is greater than a set number of bits and equal to or smaller than a maximum allowable number of bits which can be corrected through an error checking and correction (ECC) processing; and after the second unit group is detected, performing a copyback operation for moving the data, that are stored in the first memory cell block, to a second memory cell block.
Claims20
A method of operating a nonvolatile memory device, the method comprising:
- performing a read operation to read data stored in a first memory cell block including first unit groups;
- detecting a second unit group having a plurality of error bits included in the data from among the first unit groups, wherein the number of error bits is greater than a set number of bits and is equal to or smaller than a maximum allowable number of bits which can be corrected through an error checking and correction (ECC) processing;
- and
- performing a copyback operation for moving the data, that are stored in the first memory cell block, to a second memory cell block after the second unit group is detected.
A nonvolatile memory device, comprising:
- a memory cell array comprising a number of memory cell blocks;
- an error checking and correction (ECC) processing unit configured to correct error bits, that are included in data read from a first memory cell block of the memory cell blocks, through an ECC processing;
- an invalid block processing unit configured to perform an invalid block processing for preventing the first memory cell block from being used if the number of the error bits included in the data is greater than a set number of bits and is equal to or smaller than a maximum allowable number of bits which can be corrected through the ECC processing;
- and
- a control unit configured to control a copyback operation for storing data, that are stored in the first memory cell block, to a second memory cell block.
Dependencies are inferred from the claim text.