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:
Mar. 07, 2000
Filed:
Feb. 26, 1998
Applicant:
Inventor:
Motoki Higashida, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
714726 ; 714731 ;
Abstract
A semiconductor integrated circuit (1) has a scan test circuit (6) and a target test circuit (4), connected to a CPU (3) and a RAM (2) through internal buses (5a and 5b) that are mounted on a same semiconductor chip. The scan test circuit (6) provides test signals to the target test circuit (4) having a plurality of flip flops connected one another in a line like a string of beads as a shift register.