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:
Sep. 03, 1991
Filed:
Jul. 13, 1989
Applicant:
Inventors:
Shigeru Atsumi, Tokyo, JP;
Sumio Tanaka, Tokyo, JP;
Junichi Miyamoto, Yokohama, JP;
Nobuaki Ohtsuka, Yokohama, JP;
Keniti Imamiya, Yokohama, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365201 ; 36518905 ;
Abstract
A semiconductor integrated circuit having a test mode in addition to a normal mode, includes a mode detecting circuit for detecting a state of each mode and generating a mode signal, a prebuffer circuit for receiving the mode signal generated by the mode detecting circuit, amplifying an input signal by using an output driving capacity corresponding to the mode signal, and outputting the amplified signal, and an output buffer circuit for receiving an output from the prebuffer circuit and outputting data outside the integrated circuit.