Invention Grant
- Patent Title: Reset refresh techniques for self-selecting memory
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Application No.: US16143033Application Date: 2018-09-26
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Publication No.: US10777275B2Publication Date: 2020-09-15
- Inventor: Agostino Pirovano , Hernan A. Castro , Innocenzo Tortorelli , Andrea Redaelli
- Applicant: Intel Corporation
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Compass IP Law, PC
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C13/00 ; H01L27/24 ; H01L45/00

Abstract:
Reset refresh techniques are described, which can enable reducing or canceling the drift of threshold voltage distributions exhibited by memory cells. In one example a memory device includes an array of memory cells. The memory cells include a chalcogenide storage material. The memory device includes hardware logic to program the memory cells, including logic to detect whether a memory cell is selectable with a first voltage having a first polarity. In response to detection that a memory cell is not selectable with the first voltage, the memory cell is refreshed the memory cell with a second voltage that has a polarity opposite to the first voltage. After the refresh with the second voltage, the memory cell can be programmed with the first voltage having the first polarity.
Public/Granted literature
- US20190043580A1 RESET REFRESH TECHNIQUES FOR SELF-SELECTING MEMORY Public/Granted day:2019-02-07
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