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:
Apr. 02, 1996
Filed:
Sep. 16, 1994
Applicant:
Inventor:
Haruo Koizumi, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, US;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
36518504 ; 36518505 ; 36518526 ; 36518514 ; 257316 ;
Abstract
The present invention provides a semiconductor device in which an EEPROM and an OTPROM are mounted on the same chip, a single power supply system is used, and both ROMS can be effectively used. Such a semiconductor device has the EEPROM region and the OTPROM region arranged on the same chip, and a control device which makes only the prescribed cell in either region of both regions EEPROM and OTPROM regions active.