- 专利标题: Low voltage ferroelectric memory cell sensing
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申请号: US17236734申请日: 2021-04-21
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公开(公告)号: US11501816B2公开(公告)日: 2022-11-15
- 发明人: Daniele Vimercati
- 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: G11C11/22
- IPC分类号: G11C11/22
摘要:
Methods, systems, and devices for low voltage ferroelectric memory cell sensing are described. As part of an access operation for a memory cell, gates of two cascodes may be biased to compensate for associated threshold voltages. An extracted signal corresponding to a charge stored in the memory cell may be transferred through a first cascode to charge a first capacitor. Similarly, a reference signal developed at a dummy digit line may be transferred through a second cascode to charge a second capacitor. By comparing the reference signal developed at the dummy digit line to the extracted signal from the memory cell, the effect of variations in memory cell performance on the sense window may be reduced. Additionally, based on biasing the gates of the cascodes, the difference between the signals compared at the sense component may be low compared to other sensing schemes.
公开/授权文献
- US20210312968A1 LOW VOLTAGE FERROELECTRIC MEMORY CELL SENSING 公开/授权日:2021-10-07
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