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:
Dec. 14, 1993
Filed:
Oct. 28, 1991
Jagdish Pathak, Los Alstos Hills, CA (US);
John Caywood, Sunnyvale, CA (US);
Timothy J Tredwell, Fairport, NY (US);
Constantine N Anagnostopoulos, Mendon, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A memory device is provided that includes a plurality of floating gate memory cells arranged in an array, where each memory cell includes a control gate, a drain and a source. A decoder is provided that applies a first erase voltage to the control gates of selected floating gate memory cells of the array to prevent erasure of the selected floating gate memory cells and a second erase voltage to the control gates of the remaining floating gate memory cells of the array to permit erasure of the remaining floating gate memory cells in a sector erase mode of operation. The decoder is also preferably capable of supplying the second erase voltage to the control gates of each of the floating gate memory cells in a bulk erase mode of operation.