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:
May. 02, 1995
Filed:
Sep. 30, 1993
Nobuya Uda, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A signal input/output circuit for a semiconductor integrated circuit being provided with a reset signal input/output terminal 1 which inputs external reset requesting signal REQ from the outside of the semiconductor integrated circuit 10 and outputs internal reset requesting signal TWD generated at the inside, and a reset signal input circuit 3 which is connected to the reset signal input/output terminal 1 through the protection resistance 4 and generates reset signal RST resetting the semiconductor integrated circuit 10 when the external reset requesting signal REQ is inputted to the reset signal input/output terminal 1. In addition, the signal input/output circuit includes a first N-channel transistor 6 whose source is connected to the ground voltage source of the semiconductor integrated circuit 10 and whose drain is connected to the end of the reset signal input/output terminal 1 side of a protection resistance 4, and with a second N-channel transistor 7 whose source is connected to the ground voltage source of the semiconductor integrated circuit 10, and whose drain is connected to the end of the reset signal input circuit 3 side of the same.