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:
Feb. 13, 1996
Filed:
May. 03, 1993
Hajime Sakuma, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A semiconductor integrated circuit is provided with a terminal functioning as a port terminal and a pulse circuit terminal, a port mode control register for storing data designating whether the terminal should function as the port terminal or the pulse circuit terminal, a port register for holding data to be externally output, a pulse circuit for outputting a pulse signal, a selector for supplying one of the outputs from the port register and the pulse circuit in response to the value held in the port mode control register, and a switching circuit coupled to the selector and set by a signal for writing data in the port register, for causing the selector to select the output from the port register regardless of the output from the port mode control register. When a voltage of the terminal is fixed to a predetermined voltage independent of a level of the output signal from the pulse circuit, predetermined data is written in the port register, and the switching circuit causes the selector to select the output from the port register.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile