Methods for detecting short-circuited signal lines in nonvolatil

Details Methods for detecting short-circuited signal lines in nonvolatil Methods for detecting short-circuited signal lines in nonvolatil

1996-04-29

1997-02-25

Zarabian, Amir

Static information storage and retrieval

Read/write circuit

Testing

36518517, G11C 700

Patent

active

056065272

ABSTRACT:
Alternative methods for detecting a short-circuit between signal lines in an electrically erasable and programmable nonvolatile semiconductor memory device use circuitry for detecting short-circuited signal lines. One method includes the steps of: floating first and second signal lines in response to another external input; simultaneously forming an electrical path between the first and second signal lines and each test pad; and determining whether a current path is formed between the test pads, for detecting any short-circuit between the first and second signal lines. Another method includes the steps of: floating the first and second signal lines in response to another external input; simultaneously forming the electrical path between the first signal line and the test pad while discharging the second signal line to the reference potential; and determining whether a current path is formed from the test pad to the reference potential, for detecting any short-circuit between the first and second signal lines.

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