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. 23, 1993
Filed:
Apr. 03, 1991
Applicant:
Inventors:
Bal S Sandhu, Fremont, CA (US);
Frederick K Leung, Cupertino, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
3072961 ; 3072962 ;
Abstract
A charge pump circuit for use in Electrically Erasable Programmed Read-Only Memories in described herein. The charge pump uses a single clock signal, a voltage feedback arrangement to allow a D.C. voltage to pass a D.C. voltage, and a plurality of transistors, each transistor being coupled in series with each grounded-gate transistor, eliminating reverse-breakdown voltage loads on the grounded gate transistors.