- 专利标题: Virtual ground sensing circuitry and related devices, systems, and methods for crosspoint ferroelectric memory
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申请号: US15674050申请日: 2017-08-10
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公开(公告)号: US10360965B2公开(公告)日: 2019-07-23
- 发明人: Giulio Giuseppe Marotta , Marco Domenico Tiburzi
- 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: TraskBritt
- 主分类号: G11C11/22
- IPC分类号: G11C11/22 ; G11C11/56
摘要:
A virtual ground sensing circuit includes a sense circuit configured to compare a reference voltage potential to a sense node voltage potential, and virtual ground circuitry operably coupled to the sense circuit. The virtual ground circuitry is configured to provide a virtual ground at a first bias voltage potential to a conductive line operably coupled to a selected ferroelectric memory cell, and discharge the conductive line to the sense node responsive to the selected ferroelectric memory cell changing from a first polarization state to a second polarization state. A method includes applying a second bias voltage potential to another conductive line operably coupled to the selected ferroelectric memory cell, and comparing a sense node voltage potential to a reference voltage potential. Electrical systems and computing devices include virtual ground sensing circuits.
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