发明授权
- 专利标题: Apparatuses and methods of reading memory cells based on response to a test pulse
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申请号: US14977411申请日: 2015-12-21
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公开(公告)号: US09672908B2公开(公告)日: 2017-06-06
- 发明人: Innocenzo Tortorelli , Fabio Pellizzer
- 申请人: Micron Technology, Inc.
- 申请人地址: US ID Boise
- 专利权人: MICRON TECHNOLOGY, INC.
- 当前专利权人: MICRON TECHNOLOGY, INC.
- 当前专利权人地址: US ID Boise
- 代理机构: Holland & Hart LLP
- 主分类号: G11C7/00
- IPC分类号: G11C7/00 ; G11C13/00 ; G11C11/56
摘要:
The disclosed technology generally relates to memory apparatuses and methods of operating the same, and more particularly to memory arrays and methods of reading memory cells in a memory array, such as a cross point memory array. In one aspect, the method comprises providing a memory array comprising a memory cell in one of a plurality of states. The method additionally comprises determining whether a threshold voltage (Vth) of the memory cell has a value within a predetermined read voltage window. A test pulse is applied to the memory cell if it is determined that the threshold voltage has a value within the predetermined read voltage window. The state of the memory cell may be determined based on a response of the memory cell to the test pulse, wherein the state corresponds to the one of the pluralities of states of the memory cell prior to receiving the test pulse.
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