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. 29, 1992
Filed:
Aug. 07, 1991
Hiroki Satou, Nara, JP;
Kazuyuki Horinouchi, Nara, JP;
Sharp Kabushiki Kaisha, , JP;
Abstract
An integrated circuit device having a CR oscillation circuit and a crystal oscillation circuit and capable of selecting either the CR oscillation circuit or the crystal oscillation circuit, includes a unit for receiving an electrical signal, and a unit for selecting either the CR oscillation circuit or the crystal oscillation circuit in accordance with a state of the electrical signal received by the receiving unit. The integrated circuit device also includes a unit for holding the receiving unit at a predetermined level of the electrical signal. The holding unit is adapted to hold the receiving unit at the predetermined level in accordance with a state of the receiving unit. The receiving unit is a selection terminal and the selecting unit is a selection circuit. The selection circuit includes a first analog switch and a second analog switch for controlling the crystal oscillation circuit, and an OR gate for controlling a selection of either the CR oscillation circuit or the crystal oscillation circuit in accordance with the electrical signal received at the selection terminal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile