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. 04, 2001
Filed:
Jul. 16, 1998
Applicant:
Inventors:
Susumu Tanida, Hyogo, JP;
Yasuhiko Tsukikawa, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 1/604 ;
U.S. Cl.
CPC ...
G11C 1/604 ;
Abstract
A potential of an I/O line pair is defined at Vcc2−Vth by a clamp circuit, and a clamp voltage is generated by a current mirror circuit including an n channel MOS transistor and p channel MOS transistors and a constant current source. The I/O line pair is thus clamped through p channel MOS transistors connected in series between the I/O line pair.