Semiconductor memory device with switching circuit for controlli

Details Semiconductor memory device with switching circuit for controlli Semiconductor memory device with switching circuit for controlli

1996-08-21

1999-08-10

Nguyen, Hoa T.

Excavating

371 276, G11C 2900

Patent

active

059369752

ABSTRACT:
A semiconductor memory device includes a burst counter for receiving an external address signal and generating an internal address signal for a predetermined burst length in synchronization with an external clock, and a switching circuit arranged such that, during the test mode, an address signal to be inputted to a column decoder which receives and decodes said internal address signal is switched, unlike under a normal mode, to be variable at each cycle, and a column select line to be outputted from said column decoder is configured so as to be variable at each cycle. The switching circuit may include first P-type transistors together with N-type transistors for selectively inputting predetermined lower order bits of said internal address signal to one of a decoder and a column decoder, second P-type transistors for selectively placing predetermined upper order bits of internal address signal to be in one of a conductive state and a non-conductive state with respect to said column decoder, and a latch circuit for holding values of said predetermined upper order bits. Because of the switching circuit, a parallel test for a plurality of cells can be carried out efficiently.

REFERENCES:
patent: 4393457 (1983-07-01), New
patent: 5550784 (1996-08-01), Takai
patent: 5566124 (1996-10-01), Fudeyasu et al.
patent: 5629903 (1997-05-01), Agata
patent: 5675549 (1997-10-01), Ong et al.

Affiliated with

Also associated with

Rating

Semiconductor memory device with switching circuit for controlli does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor memory device with switching circuit for controlli, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor memory device with switching circuit for controlli will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1127061