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. 27, 1994
Filed:
Jul. 29, 1992
Kiyoshi Adachi, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A microcomputer including first, a voltage change circuit which includes circuitry for selecting one of two voltages applicable to a PROM and, second, leak current prevention circuitry for preventing a current from leaking from a first terminal at a first voltage through first and second switching elements to a second terminal. The leak current prevention circuitry can be a transistor whose source, drain and gate are tied to the first terminal, to the gate of the second switching element and to the second terminal, respectively. The leak current prevention circuitry operates to cut off the second switching element which the voltage at the second terminal is zero. The circuitry for selecting can be two series circuit, each consisting of a diode and two transistors. The series circuits are interconnected and responsive to a voltage selecting signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile