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:
Jun. 09, 1981
Filed:
May. 23, 1979
Applicant:
Inventor:
Tsuneo Ito, Kodaira, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365189 ; 365233 ;
Abstract
A semiconductor memory device comprises an input address buffer circuit and a memory cell circuit which are constructed of static logic circuits, an address decoder circuit which is constructed of a dynamic logic circuit, a detector circuit which detects a change in an input address signal, and a pulse generator circuit which is started operating by an output signal of the detector circuit and which provides a clock signal for the dynamic logic circuit. Owing to the detector circuit and the pulse generator circuit, the semiconductor memory device operates without the necessity for any external clock signal.