发明公开
- 专利标题: DETECTION OF BROKEN WORD-LINES IN MEMORY ARRAYS
- 专利标题(中): 检测半导体存储器阵列断字线
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申请号: EP11729863.8申请日: 2011-06-24
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公开(公告)号: EP2591472A1公开(公告)日: 2013-05-15
- 发明人: SHAH, Grishma Shailesh , LI, Yan
- 申请人: SanDisk Technologies Inc.
- 申请人地址: Two Legacy Town Center 6900 North Dallas Parkway Plano, Texas 75024 US
- 专利权人: SanDisk Technologies Inc.
- 当前专利权人: SanDisk Technologies Inc.
- 当前专利权人地址: Two Legacy Town Center 6900 North Dallas Parkway Plano, Texas 75024 US
- 代理机构: Prock, Thomas
- 优先权: US833167 20100709
- 国际公布: WO2012005993 20120112
- 主分类号: G11C29/02
- IPC分类号: G11C29/02
摘要:
Techniques and corresponding circuitry are presented for the detection of broken wordlines in a memory array. In an exemplary embodiment, a program operation of the memory circuit is performed on a first plurality of memory cells along a word-line, where the programming operation includes a series of alternating programming pulses and verify operations, with the memory cells individually locking out from further programming pulses as verified. The determination of whether the word-line is defective based on the number of programming pulses for the memory cells of a first subset of the first plurality to verify as programmed relative to the number of programming pulses for the memory cells of a second subset of the first plurality to verify as programmed, where the first and second subsets each contain multiple memory cells and are not the same.
公开/授权文献
- EP2591472B1 DETECTION OF BROKEN WORD-LINES IN MEMORY ARRAYS 公开/授权日:2014-12-10
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