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:
Jan. 09, 2007
Filed:
Aug. 16, 2004
Masatoshi Hasegawa, Ome, JP;
Shuichi Miyaoka, Hanno, JP;
Hiroshi Akasaki, Ome, JP;
Masahiro Katayama, Maebashi, JP;
Masatoshi Hasegawa, Ome, JP;
Shuichi Miyaoka, Hanno, JP;
Hiroshi Akasaki, Ome, JP;
Masahiro Katayama, Maebashi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi ULSI Systems Co. Ltd., Tokyo, JP;
Abstract
Inputs of a control circuit are connected to a terminal to which an external operation control signal is supplied and a terminal to which a timing signal used exclusively for testing is supplied, and the control circuit is made controllable such that, in a test mode, a state of an internal operation control signal is changed in response to a change of a state of the external operation control signal, and the internal operation control signal is changed in response to the timing exclusively used for testing, whereas, in a normal operation mode, the state of the internal operation control signal is changed in response to the change of the state of the external operation control signal, and the internal operation control signal is changed in response to the change of the external operation control signal.