- 专利标题: Method and apparatus for faster determination of cell state of a resistive memory cell using a parallel resistor
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申请号: US15254630申请日: 2016-09-01
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公开(公告)号: US09953706B2公开(公告)日: 2018-04-24
- 发明人: Nikolaos Papandreou , Charalampos Pozidis , Abu Sebastian , Milos Stanisavljevic
- 申请人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Tutunjian & Bitetto, P.C.
- 代理商 Vazken Alexanian
- 优先权: GB1405374.8 20140326
- 主分类号: G11C11/00
- IPC分类号: G11C11/00 ; G11C13/00 ; G11C11/56
摘要:
A device for determining an actual cell state of a resistive memory cell having a plurality M of programmable cell states comprising a sensing circuit, a settling circuit, a prebiasing circuit, and a resistor coupled in parallel to the resistive memory cell, wherein the resistor is configured to reduce an effective resistance seen by the prebiasing circuit. The sensing circuit is configured to sense a sensing voltage of the resistive memory cell and output a resultant value in response to the sensing voltage which is indicative for the actual cell state. The settling circuit is configured to settle the sensing voltage to a certain target voltage representing one of the M programmable cell states. The prebiasing circuit is configured to prebiase a bitline capacitance of the resistive memory cell such the sensing voltage is close to the certain target voltage.
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