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:
Nov. 18, 2003
Filed:
Nov. 13, 2001
Kazuki Honma, Kodaira, JP;
Terutaka Okada, Musashimurayama, JP;
Fumiaki Kitajima, Akita, JP;
Takahiro Hatazawa, Akita, JP;
Hiroyuki Motomatsu, Akishima, JP;
Katsuhiro Haruyama, Akishima, JP;
Other;
Abstract
A semiconductor device includes a first semiconductor chip having a non-volatile memory array which has a first memory area for storing input information of usual operation, and a second memory area for storing historical information of an electrical characteristic test of the first memory area. The device further includes a second semiconductor chip having a volatile memory array with a third memory area for storing input information of usual operation. Historical information of an electrical characteristic test of the third memory area of the second semiconductor chip is stored into the second memory area of the first semiconductor chip.