摘要:
Memory systems and related defective block management methods are provided. Methods for managing a defective block in a memory device include allocating a defective block when a memory block satisfies a defective block condition. The allocated defective block is cancelled when the allocated defective block satisfies a defective block cancellation condition.
摘要:
Memory systems and related defective block management methods are provided. Methods for managing a defective block in a memory device include allocating a defective block when a memory block satisfies a defective block condition. The allocated defective block is cancelled when the allocated defective block satisfies a defective block cancellation condition.
摘要:
A distribution analyzing method for a nonvolatile memory device having memory cells exhibiting overlapping first and second threshold voltage distributions includes; detecting a degree of overlap between the first and second threshold voltage distributions by reading data stored in the memory cells and determining read index data from the read data, and estimating a distribution characteristic for at least one of the overlapping threshold voltage distributions using the read index data.
摘要:
The storage device includes a storage unit configured to store data, an error controlling unit configured to correct an error of the data read out from the storage unit according to at least one read level, and a read level controlling unit configured to control the at least one read level when the error is uncorrectable. The read level controlling unit is configured to measure a distribution of memory cells of the storage unit, configured to filter the measured distribution, and configured to reset the at least one read level based on the filtered distribution.
摘要:
Methods of accessing storage devices. The methods include rearranging a writing order of continuous first and second data according to a reading order, and writing the first and second data in a first and second storage region of the storage device, respectively, according to the writing order. The reading order reads the second storage region first that provides interference on the first storage region.
摘要:
Methods of accessing storage devices. The methods include rearranging a writing order of continuous first and second data according to a reading order, and writing the first and second data in a first and second storage region of the storage device, respectively, according to the writing order. The reading order reads the second storage region first that provides interference on the first storage region.
摘要:
The storage device includes a storage unit configured to store data, an error controlling unit configured to correct an error of the data read out from the storage unit according to at least one read level, and a read level controlling unit configured to control the at least one read level when the error is uncorrectable. The read level controlling unit is configured to measure a distribution of memory cells of the storage unit, configured to filter the measured distribution, and configured to reset the at least one read level based on the filtered distribution.
摘要:
Disclosed is a program method of a non-volatile memory device which comprises classifying plural memory cells into aggressor cells and victim cells based on program data to be written in the plural memory cells; and programming the aggressor cells by a program manner different from the victim cells.
摘要:
Disclosed is a program method of a non-volatile memory device which comprises classifying plural memory cells into aggressor cells and victim cells based on program data to be written in the plural memory cells; and programming the aggressor cells by a program manner different from the victim cells.
摘要:
Provided is a program method of a multi-bit memory device with memory cells arranged in rows and columns. The program method includes a programming each memory cell of the first group of memory cells to a state within a first group of states according to a verify voltage level of a first group of verify voltage levels within a first range of levels, and programming each memory cell of the second group of memory cells to a state within a second group of states according to a verify voltage level of a second group of verify voltage levels within a second range of levels. The lowest verify voltage level in the second range of levels is higher than the highest verify voltage level in the first range of levels. A first voltage difference between adjacent verify voltage levels within the first range of levels is different from a second voltage difference between the highest verify voltage level of the second group of verify voltage levels and the lowest verify voltage level of the third group of verify voltage levels.