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:
Sep. 06, 1994
Filed:
Nov. 12, 1993
Applicant:
Inventor:
Nagesh Challa, Sunnyvale, CA (US);
Assignee:
Nexcom Technology, Inc., Sunnyvale, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365185 ; 365 51 ; 365218 ; 365226 ; 365900 ;
Abstract
A single-transistor EEPROM device of the present invention comprises memory transistors in banks similar to NAND structures wherein the control gates of the memory transistors have negative voltages applied in various modes that allow reading, writing, and programming regardless of the V.sub.th of nonselected memory transistors in a bank. Programming and erasing results from various combinations of negative and positive voltages are used on the select gates together with positive voltages less than that alone which is necessary to induce Fowler-Nordheim tunneling are applied to the bit lines.