- 专利标题: MEMORY SYSTEM HAVING MEMORY DEVICE AND CONTROLLER
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申请号: US17858294申请日: 2022-07-06
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公开(公告)号: US20220342606A1公开(公告)日: 2022-10-27
- 发明人: Suguru NISHIKAWA , Yoshihisa KOJIMA , Takehiko AMAKI
- 申请人: Kioxia Corporation
- 申请人地址: JP Tokyo
- 专利权人: Kioxia Corporation
- 当前专利权人: Kioxia Corporation
- 当前专利权人地址: JP Tokyo
- 优先权: JP2019-196427 20191029
- 主分类号: G06F3/06
- IPC分类号: G06F3/06 ; G11C16/26 ; G11C16/34 ; G11C16/04
摘要:
A memory system includes a memory device having a memory cell array, and a controller. The memory cell array includes a plurality of first units and at least one second unit. The second unit includes the plurality of first units. The controller counts a first number of times of read operation for each of the plurality of first units, and, in response to the first number of times for one first unit among the plurality of first units reaching a first value, updates a second number of times for the second unit that includes the one first unit. In response to the second number of times reaching a second value, the controller determines whether to rewrite data stored in at least one of the first units included in the second unit.