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. 12, 1988
Filed:
Apr. 15, 1986
Yutaka Shinagawa, Koganei, JP;
Shigeru Shimada, Hoya, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Microcomputer, Tokyo, JP;
Abstract
A semiconductor memory includes a word line driving circuit whose output terminal is coupled to one end of each word line of a memory array, and also an auxiliary driving circuit which drives the other end of the word line upon receiving a selection signal transmitted to the other end of this word line. The auxiliary driving circuit comprises a level detector circuit which is dynamically driven by a timing signal, and a driving element which is driven by an output of the level detector circuit to drive the other end of the word line. When the word line is to be reset, the output of the level detector circuit is set at a level which brings the driving element into an 'off' state. The auxiliary driving circuit of this arrangement permits the other end of the word line to change to a selection level quickly and to be reset quickly.