Data output control circuit of semiconductor memory device havin

Details Data output control circuit of semiconductor memory device havin Data output control circuit of semiconductor memory device havin

1997-01-16

1998-01-13

Nelms, David C.

Static information storage and retrieval

Read/write circuit

Testing

36518905, 36518907, G11C 2900

Patent

active

057086141

ABSTRACT:
In a method of testing a semiconductor memory device having a pipeline structure, a same data is stored in a plurality of memory cells in advance. The stored data are read out from the plurality of memory cells to produce data signals and amplified as the data signals. A determining section determines whether all the data signals are same, to generate a determination result signal. In accordance with the determination result signal, one of signals associated with the amplified data signals and predetermined signals are transferred to an output section in synchronous with a synchronous signal. The output section includes a plurality of output circuits each of which provides, as an indication signal, one of a low level signal, a high level signal and a signal indicative of a high impedance state in response to each of the transferred signals. Therefore, using at least one of the indication signals, whether the plurality of memory cells are correctly operable can be tested.

REFERENCES:
patent: 5293341 (1994-03-01), Tsujimoto
patent: 5400282 (1995-03-01), Suzuki
patent: 5428575 (1995-06-01), Fudeyasu

Affiliated with

Also associated with

Rating

Data output control circuit of semiconductor memory device havin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data output control circuit of semiconductor memory device havin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data output control circuit of semiconductor memory device havin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-331650