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:
Jan. 09, 1996
Filed:
Jun. 22, 1994
Applicant:
Inventor:
Yasuhiro Hotta, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
3652335 ; 3652385 ; 365194 ; 36518907 ; 326 98 ;
Abstract
A semiconductor memory device of the invention is provided with a usual access mode and a rapid access mode. The semiconductor memory device includes: a change detection circuit, provided for each of bit signals which are a part of an address signal, for detecting a change of the address signal; a timer circuit for, when the change detection circuit detects the change of the address signal, generating a signal indicating the change of the address; and an output circuit for outputting the signal generated by the timer circuit as a signal which controls a wait of access in each of the access modes.