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:
Jul. 29, 2003
Filed:
Dec. 07, 1999
Applicant:
Inventor:
Isao Naritake, Tokyo, JP;
Assignee:
NEC Electronics Corporation, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 2/900 ;
U.S. Cl.
CPC ...
G11C 2/900 ;
Abstract
A semiconductor memory device is provided with an MPU, a secondary cache and a TAG memory mounted on a chip. Registers are provided for a plurality of test data buses connected parallel to a plurality of data buses from the MPU to the secondary cache or the TAG memory. The registers and the plurality of data buses of the MPU are changed with switches so as to be connected with a bonding pad which is a part of an external terminal for the MPU. With this arrangement, the semiconductor memory device can connect with a tester for a DRAM part test via the bonding pad.