- 专利标题: Apparatuses and methods for access based refresh timing
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申请号: US18064773申请日: 2022-12-12
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公开(公告)号: US11955158B2公开(公告)日: 2024-04-09
- 发明人: Jason M. Brown , Daniel B. Penney
- 申请人: MICRON TECHNOLOGY, INC.
- 申请人地址: US ID Boise
- 专利权人: MICRON TECHNOLOGY, INC.
- 当前专利权人: MICRON TECHNOLOGY, INC.
- 当前专利权人地址: US ID Boise
- 分案原申请号: US16886284 2020.05.28
- 主分类号: G11C11/40
- IPC分类号: G11C11/40 ; G06F11/30 ; G11C7/10 ; G11C11/406 ; G11C11/4076 ; G11C16/34 ; G11C7/00
摘要:
Embodiments of the disclosure are drawn to apparatuses and methods for scheduling targeted refreshes in a memory device. Memory cells in a memory device may be volatile and may need to be periodically refreshed as part of an auto-refresh operation. In addition, certain rows may experience faster degradation, and may need to undergo targeted refresh operations, where a specific targeted refresh address is provided and refreshed. The rate at which targeted refresh operations need to occur may be based on the rate at which memory cells are accessed. The memory device may monitor accesses to a bank of the memory, and may use a count of the accesses to determine if an auto-refresh address or a targeted refresh address will be refreshed.
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