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:
Jun. 17, 1997
Filed:
Oct. 30, 1995
Applicant:
Inventors:
Yi-Pin Lin, Hsin-chu, TW;
Tsen Shau Yang, Hsin-chu, TW;
Assignee:
Myson Technology, Inc., , TW;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518504 ; 36518526 ; 36518529 ; 36518533 ;
Abstract
The present invention provides a security configuration of EEPROM, which is adaptable to a semiconductor integrated circuit. Each byte or minimum cell of the EEPROM is assigned a security bit which corresponds to the same memory cell of EEPROM in a data memory array. Since the security bit can be established inside the memory array, necessary chip area is not increased significantly.