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. 01, 1997
Filed:
May. 02, 1995
Applicant:
Inventor:
Ming-Bing Chang, Santa Clara, CA (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
36518516 ; 36518533 ; 36518508 ; 36518505 ; 3651851 ; 365182 ;
Abstract
A selected cell in a virtual-ground flash EEPROM array, which is based on a source-coupled, split-gate storage cell, is programmed by grounding the source bit line of the selected cell, grounding the drain bit line of the immediately adjacent cell which shares the same source bit line, applying a write bias voltage to the remaining bit lines, applying a programming voltage to the word line associated with the selected cell, and applying ground to the remaining word lines.