Invention Grant
- Patent Title: Apparatuses and methods for managing row access counts
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Application No.: US16268818Application Date: 2019-02-06
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Publication No.: US10770127B2Publication Date: 2020-09-08
- Inventor: Michael A. Shore , Jiyun Li
- 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: G11C11/406
- IPC: G11C11/406 ; G11C11/4076 ; G11C11/407

Abstract:
Embodiments of the disclosure are drawn to apparatuses and methods for managing access counts of wordlines of a memory. Repeated access to an aggressor wordline may cause increased data degradation in nearby victim wordlines of the memory. The access count of a given wordline may be stored in counter memory cells positioned along that wordline. When the wordline is accessed, the counter memory cells may be read out to refresh circuit, which may determine the access count based on the values stored in the counter memory cells. If the access count is below a threshold, the access count may be incremented and written back to the counter memory cells. If the access count is above the threshold, the refresh circuit may signal that the accessed wordline is an aggressor, and may reset the value of the access count before writing it back to the counter memory cells.
Public/Granted literature
- US20200251158A1 APPARATUSES AND METHODS FOR MANAGING ROW ACCESS COUNTS Public/Granted day:2020-08-06
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