The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 22, 1994
Filed:
Jul. 09, 1991
Applicant:
Inventor:
Yasuhiro Yamamoto, Kasugai, JP;
Assignees:
Fujitsu Limited, Kawasaki, JP;
Fujitsu VLSI Limited, Kasugai, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
365190 ; 36518901 ; 36518905 ; 365202 ;
Abstract
A sense amplifier in a semiconductor memory device includes a detection unit for generating complementary state signals showing a state of a pair of bit lines coupled to a plurality of memory cells in the semiconductor memory device in which word lines are coupled to the memory cells, and a latch circuit for receiving the complementary signals and a reference signal and for inverting states of complementary output signals of the latch means only when one of the complementary state signals decreases and becomes lower than the reference voltage.