Invention Grant
- Patent Title: Drift mitigation with embedded refresh
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Application No.: US16284491Application Date: 2019-02-25
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Publication No.: US10777291B2Publication Date: 2020-09-15
- Inventor: Innocenzo Tortorelli , Agostino Pirovano , Andrea Redaelli , Fabio Pellizzer , Hongmei Wang
- 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: Holland & Hart LLP
- Main IPC: G11C13/00
- IPC: G11C13/00 ; G11C29/00 ; H01L27/24 ; H01L45/00 ; G11C29/52

Abstract:
Methods, systems, and devices for drift mitigation with embedded refresh are described. A memory cell may be written to and read from using write and read voltages, respectively, that are of different polarities. For example, a memory cell may be written to by applying a first write voltage and may be subsequently read from by applying a first read voltage of a first polarity. At least one additional (e.g., a second) read voltage—a setback voltage—of a second polarity may be utilized to return the memory cell to its original state. Thus the setback voltage may mitigate a shift in the voltage distribution of the cell caused by the first read voltage.
Public/Granted literature
- US20190206506A1 DRIFT MITIGATION WITH EMBEDDED REFRESH Public/Granted day:2019-07-04
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