Invention Grant
- Patent Title: Apparatuses and methods for refreshing memories with redundancy
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Application No.: US17005579Application Date: 2020-08-28
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Publication No.: US11152078B1Publication Date: 2021-10-19
- Inventor: Bin Du , Liang Li , Yu Zhang , Yin Lu
- Applicant: MICRON TECHNOLOGY, INC.
- Applicant Address: US ID Boise
- Assignee: MICRON TECHNOLOGY, INC.
- Current Assignee: MICRON TECHNOLOGY, INC.
- Current Assignee Address: US ID Boise
- Agency: Dorsey & Whitney LLP
- Main IPC: G11C29/44
- IPC: G11C29/44 ; G11C29/02 ; G11C29/00 ; G11C29/12 ; G11C29/10

Abstract:
Embodiments of the disclosure are drawn to apparatuses methods for checking redundancy information for row addresses prior to performing various refresh operations, such as auto refresh and targeted refresh operations. In some examples, refresh operations may be multi pump refresh operations. In some examples, a targeted refresh operation may be performed prior to an auto refresh operation responsive to a multi pump refresh operation. In some examples, redundancy information for the auto refresh operation may be performed, at least in part, during the targeted refresh operation. In some examples, refresh operations on word lines may be skipped when the redundancy information indicates the word line is defective or unused.
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