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:
Aug. 01, 1995
Filed:
Dec. 09, 1993
Applicant:
Inventor:
Hiroaki Masumoto, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
326 38 ; 326 86 ; 327143 ; 327530 ;
Abstract
In a microcomputer, a circuit is provided which performs the option setting of the condition of an I/O port. The option setting is repeatedly performed while the microcomputer is operating. As a result, even if the option setting is changed to an incorrect setting due to noise from external sources, the incorrect option setting is immediately returned to the correct setting. Moreover, the option setting is never reset at the time of resetting other than the resetting performed at the time of the turning on of the power.