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:
Nov. 13, 1990
Filed:
Jun. 08, 1988
Applicant:
Inventors:
Masami Usami, Ohme, JP;
Kazuhiro Akimoto, Tokorozawa, JP;
Takeo Uchiyama, Ohme, JP;
Masato Iwabuchi, Hachioji, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ; G11C / ;
U.S. Cl.
CPC ...
36518901 ; 36518905 ; 36523008 ; 365193 ; 365233 ;
Abstract
A bipolar type RAM having latches which accept and hold address signals, input write data and a write enable signal supplied from outside of the corresponding RAM chip, in accordance with strobe signals, and a timing generator circuit which forms the strobe signals and a write pulse required for a write operation and satisfying predetermined timing conditions, on the basis of a chip select signal supplied from outside.