Managing refreshment of memory cells in memory systems
AssigneeYangtze Memory Technologies Co., Ltd.
InventorsFanya Bi, Xing Wang, Hua Tan, Zhe Sun, Bo Yu, Guangyao Han
Life of this patent
Estimating the term…
Abstract
Systems, devices, methods, and storage media for managing refreshment of memory cells in memory systems are provided. In one aspect, a memory system includes: a non-volatile memory device including a plurality of memory cells and a memory controller coupled to the non-volatile memory device. The memory controller is configured to: refresh adjacent memory cells of a target memory cell of the plurality of memory cells, when a count of write operations performed on the target memory cell within a preset time duration is greater than a preset threshold.
Claims20
A memory system comprising:
- a non-volatile memory device comprising a plurality of memory cells, wherein the plurality of memory cells comprise a target memory cell;
- and
- a memory controller coupled to the non-volatile memory device,
- wherein the memory controller is configured to:
- in response to determining that a count of write operations performed on the target memory cell within a preset time duration is greater than a preset threshold, refresh adjacent memory cells of the target memory cell, wherein the preset threshold corresponds to the preset time duration.
An electronic device comprising:
- a host system;
- and
- a memory system coupled to the host system,
- wherein the memory system comprises a non-volatile memory device and a memory controller coupled to the non-volatile memory device, and the non-volatile memory device comprises a plurality of memory cells that comprises a target memory cell,
- wherein the host system is configured to:
- store a count of write operations performed on the target memory cell in a filter of the host system during performing the write operations on the target memory cell, and
- wherein the memory controller is configured to:
- obtain, from the filter, the count of write operations performed on the target memory cell within a preset time duration, and compare the count of write operations with a preset threshold, wherein the preset threshold corresponds to the preset time duration;
- and
- in response to determining that the count of write operations is greater than the preset threshold, refresh adjacent memory cells of the target memory cell.
An operating method for a memory system comprising a non-volatile memory device and a memory controller coupled with the non-volatile memory device, the operating method comprising:
- comparing a count of write operations performed on a target memory cell of a plurality of memory cells of the non-volatile memory device within a preset time duration with a preset threshold, wherein the preset threshold corresponds to the preset time duration;
- and
- in response to determining that the count of write operations performed on the target memory cell within a preset time duration is greater than the preset threshold, refreshing adjacent memory cells of the target memory cell.
Dependencies are inferred from the claim text.