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. 08, 1994
Filed:
Nov. 04, 1991
Yasuyuki Hasegawa, Tokyo, JP;
NEC Corporation, , JP;
Abstract
An integrated circuit device comprises a mega-macro(s) and an interface block section. At least one of the mega-macro and the interface block section comprises a switching circuit for switching a mode between a test mode and a normal mode and two sets of individual dedicated terminals which are valid in the normal mode and the test mode, respectively, and serve to transfer signals to/from an internal circuit. In such an arrangement, an mega-macro isolation test can be simplified and also a designer can design the circuit in a normal mode with no consciousness of the presence of a test circuit thereby making it easy to analyze and debug the circuit, so that the burden of test designing for a designer can be removed thereby to shorten the time needed for developing the integrated circuit device.