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:
Jan. 09, 1996
Filed:
Jul. 21, 1994
Kiyoshi Adachi, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A microcomputer in which a monitor Read Only Memory (ROM) 100 having a monitor sense amplifier circuit 113 whose normal operation range for power voltage is set narrower than that of the sense amplifier circuit 130 of the ROM 20 is provided, and the sense amplifier circuit 130 of the ROM 20 is constructed so as to has a plurality of sense amplifier circuit portions and a switching circuit portion to obtain an optimum operation range for a plurality of power voltages by switching the circuit characteristic according to a signal supplied from the monitor ROM 100. The sense amplifier circuit 130 is switched to obtain an optimum operation range for a plurality of power voltages, or the frequency of the system clock E can be switched, by detecting such a state wherein the power voltage decreases or the frequency of the system clock E increases to reach near the operation limit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile