摘要:
An erase method of a nonvolatile memory device is provided which includes receiving an erase request; selecting an erase mode of a memory block corresponding to the erase request, based on an access condition of the nonvolatile memory device managed by a memory controller; and controlling the nonvolatile memory device to erase the memory block according to the selected erase mode. The erase mode includes a fast erase mode of which an erase time for the memory block is shorter than a reference time and a slow erase mode of which an erase time for the memory block is longer than the reference time.
摘要:
A memory system comprises a nonvolatile memory device comprising a memory cell array comprising first and second memory blocks, and a memory controller configured to control the nonvolatile memory device to read data from the first memory block, selectively determine an error correction operation to be performed on the data after it is read from the first memory block based on a state of at least one of the first and second memory blocks, and then store the data in the second memory block.
摘要:
A method of operating a nonvolatile memory device comprises receiving a read command from a memory controller, determining a read mode of the nonvolatile memory device, selecting a read voltage based on the read mode, and performing a read operation on memory cells of a selected page of the nonvolatile memory device using the selected read voltage.
摘要:
A method of operating a nonvolatile memory device comprises receiving a read command from a memory controller, determining a read mode of the nonvolatile memory device, selecting a read voltage based on the read mode, and performing a read operation on memory cells of a selected page of the nonvolatile memory device using the selected read voltage.
摘要:
An erase method of a nonvolatile memory device is provided which includes receiving an erase request; selecting an erase mode of a memory block corresponding to the erase request, based on an access condition of the nonvolatile memory device managed by a memory controller; and controlling the nonvolatile memory device to erase the memory block according to the selected erase mode. The erase mode includes a fast erase mode of which an erase time for the memory block is shorter than a reference time and a slow erase mode of which an erase time for the memory block is longer than the reference time.
摘要:
Disclosed is a memory system which includes a nonvolatile memory having a user area and a buffer area; and wear level control logic managing a mode change operation in which memory blocks of the user area are partially changed into the buffer area, based on wear level information of the nonvolatile memory.
摘要:
Disclosed is a method of operating a nonvolatile memory device which includes a first memory area and a second memory area, the number of pages being stored in each word line of the first memory area being smaller than the number of pages being stored in each word line of the second memory area, and the first memory area being configured to buffer data to be written in the second memory area. The method includes sensing pages stored in the first memory area to store the sensed pages in a page buffer; receiving an address for storing pages stored in the page buffer in the second memory area; and randomizing the pages stored in the page buffer based on the address.
摘要:
A nonvolatile memory device comprises a cell array connected to a plurality of bit lines in an all bit line structure, a page buffer circuit connected to the plurality of bit lines, and control logic configured to control the page buffer circuit. The control logic controls the page buffer circuit to sense memory cells corresponding to both even-numbered and odd-numbered columns of a selected page in a first read mode and to sense memory cells corresponding to one of the even-numbered and odd-numbered columns of the selected page in a second read mode. A sensing operation is performed at least twice in the first read mode and once in the second read mode.
摘要:
An address mapping table includes arrays each being allocated to a logical address and in which a physical address mapping the logical address is stored. In the case where the physical address mapped to the logical address is changed, a value of a difference between a pre-changed physical address and a physical address to be changed is stored in the address mapping table. When the logical address is mapped to the physical address, the mapped physical address is calculated by adding up the logical address and values stored in the arrays allocated to the logical address. The address mapping table is managed to decrease the number of erase counts of a memory device in which the address mapping table is stored.
摘要:
An method of operating a memory system including a plurality of memory cells includes changing an operation mode at least some of the memory cells which operate based on a first operation mode to operate based on a second operation mode; and performing a change erase operation on the memory cells for which an operation mode is changed on the basis of a change erase condition when the operation mode is changed. When memory cells operate in the first operation mode, a normal erase operation is performed based on a first erase condition, and when memory cells operate in the second operation mode, a normal erase operation is performed based on a second erase condition. The change erase condition is different from at least one of the first and second erase conditions.