Invention Grant
- Patent Title: Detection of broken word-lines in memory arrays
- Patent Title (中): 检测存储器阵列中断字符
-
Application No.: US12833167Application Date: 2010-07-09
-
Publication No.: US08305807B2Publication Date: 2012-11-06
- Inventor: Grishma Shailesh Shah , Yan Li
- Applicant: Grishma Shailesh Shah , Yan Li
- Applicant Address: US TX Plano
- Assignee: SanDisk Technologies Inc.
- Current Assignee: SanDisk Technologies Inc.
- Current Assignee Address: US TX Plano
- Agency: Davis Wright Tremaine LLP
- Main IPC: G11C16/34
- IPC: G11C16/34

Abstract:
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.
Public/Granted literature
- US20120008405A1 Detection of Broken Word-Lines in Memory Arrays Public/Granted day:2012-01-12
Information query