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:
Jul. 21, 1992
Filed:
Mar. 25, 1991
Applicant:
Inventors:
Paul D Keswick, San Jose, CA (US);
James M Apland, San Jose, CA (US);
Assignee:
Cypress Semiconductor Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518906 ; 365203 ; 365204 ; 36523006 ; 3072966 ; 3072968 ; 307567 ; 307568 ; 323313 ;
Abstract
An improved MOS memory circuit using an MOS clamp circuit on the bitlines which turns on when the voltage on a bitline exceeds a predetermined voltage, thereby drawing current from the bitline to remove excess charge and return the bitline to the predetermined voltage. The clamp circuit of this invention allows prompt read access because reading is not substantially delayed by the excess bitline charge.