Test mode for detecting a floating word line

Details Test mode for detecting a floating word line Test mode for detecting a floating word line

2007-01-30

2007-01-30

Le, Vu A. (Department: 2824)

Static information storage and retrieval

Read/write circuit

Testing

C365S230030

Reexamination Certificate

active

11098998

ABSTRACT:
Devices and methods that allow floating word lines in memory arrays to be detected are provided. By driving local word lines from each side with divided drive lines, local word lines on one side of the memory array may be set to an predetermined voltage level (e.g., an intermediate voltage level between VPPand VNWLL). After disconnecting the local word lines on the one side, memory cells on the other side may be tested for read failures, which may indicate floating word lines on the one side.

REFERENCES:
patent: 5856942 (1999-01-01), Lee et al.
patent: 6426914 (2002-07-01), Dennard et al.

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