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. 01, 1988
Filed:
Apr. 18, 1985
Applicant:
Inventor:
Jun-ichi Tsujimoto, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307590 ; 307594 ; 307605 ; 307246 ;
Abstract
A timer circuit which is used for write and erase time control of a semicondcutor memory, and configured so as to transfer a charge of a charge storage capacitor to a charge pump capacitor through a first transfer gate thereafter to repeatedly effect a discharge operation by using a second transfer gate thereby to gradually reduce a charge of the charge storage capacitor, thus performing a timer operation, characterized in that there is provided a circuit for making an adjustment such that a voltage applied to the charge pump capacitor is smaller than a voltage applied to the charge storage capacitor.