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:
Oct. 06, 1998
Filed:
Feb. 27, 1997
Applicant:
Inventor:
Yasuhiro Kobayashi, Gifu, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518515 ; 3651852 ; 36518522 ; 365210 ;
Abstract
A semiconductor memory device includes a plurality of memory cells each having a control gate, a source, a drain and a floating gate. A write control unit controls voltages applied to the control gates, the sources and the drains to write data in each memory cell. A write-current determining circuit is connected to the write control unit, for determining a write current flowing in the floating gate of each memory cell and controlling the write control unit in accordance with a determination result, such that data is written in each memory cell with a predetermined write current.