- 专利标题: Stressing and testing semiconductor memory cells
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申请号: US15207531申请日: 2016-07-12
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公开(公告)号: US09704567B1公开(公告)日: 2017-07-11
- 发明人: Michael B. Kugel , Stefan Payer , Wolfgang Penth , Juergen Pille
- 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
- 代理商 Nicholas D. Bowman
- 主分类号: G11C29/00
- IPC分类号: G11C29/00 ; G11C11/419 ; G11C11/418
摘要:
A memory cell that is readable through a bit line and addressable through a word line can be stressed using a method that includes addressing the memory cell, through the word line, for an addressing time. The memory cell can be stressed by applying a stress voltage to the bit line for a stress voltage time that overlaps with the addressing time for a stress time Δt. A method for testing a memory cell can include writing a data value into the memory cell, stressing the memory cell, reading a stored value from the memory cell and determining whether the stored value corresponds to the data value. A testable memory array can include at least one memory cell that is addressable through a word line and readable through a bit line and a stress circuit for applying a stress voltage to the bit line.
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