发明公开
EP2591472A1 DETECTION OF BROKEN WORD-LINES IN MEMORY ARRAYS 有权
检测半导体存储器阵列断字线

  • 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
  • 申请号: EP11729863.8
    申请日: 2011-06-24
  • 公开(公告)号: EP2591472A1
    公开(公告)日: 2013-05-15
  • 发明人: SHAH, Grishma ShaileshLI, 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
DETECTION OF BROKEN WORD-LINES IN MEMORY ARRAYS
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.
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