发明授权
US07532513B2 Apparatus and method for detecting word line leakage in memory devices
有权
用于检测存储器件中的字线泄漏的装置和方法
- 专利标题: Apparatus and method for detecting word line leakage in memory devices
- 专利标题(中): 用于检测存储器件中的字线泄漏的装置和方法
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申请号: US11845690申请日: 2007-08-27
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公开(公告)号: US07532513B2公开(公告)日: 2009-05-12
- 发明人: Han-Sung Chen , Su-Chueh Lo , Chun-Hsiung Hung , Nai-Ping Kuo , Ming-Chih Hsieh , Wen-Pin Tsai
- 申请人: Han-Sung Chen , Su-Chueh Lo , Chun-Hsiung Hung , Nai-Ping Kuo , Ming-Chih Hsieh , Wen-Pin Tsai
- 申请人地址: CN Hsinchu, Taiwan
- 专利权人: Macronix International Co., Ltd.
- 当前专利权人: Macronix International Co., Ltd.
- 当前专利权人地址: CN Hsinchu, Taiwan
- 代理机构: Townsend and Townsend and Crew LLP
- 主分类号: G11C11/34
- IPC分类号: G11C11/34
摘要:
A method for detecting word line leakage in a memory device includes coupling a first plurality of word lines in the memory device to a voltage source while grounding a second plurality of word lines. Each of the second plurality of word lines is adjacent to a corresponding one of the first plurality of word lines. The method includes waiting for a period of time to allow the word lines to reach a predetermined read voltage level. The method also includes decoupling the first plurality of word lines from the voltage source and waiting for a second predetermined period of time to allow the first plurality of word lines to discharge. The method further includes sensing a current associated with the word lines, and comparing the current with a predetermined reference current which is selected for identifying a word line leakage condition associated with the first plurality of word lines.
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