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. 12, 1993
Filed:
Jan. 17, 1991
Osamu Matsumoto, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
Memory cells providing a memory cell array are each fromed of a floating gate MOS transistor for storing data and a select MOS transistor and the memory cell is connected to a power source via a MOS transistor providing a load element. A potential on the connection node A between the load element and the memory cell is detected by an inverter providing a potential detection circuit and a monitor output is derived from the inverter. A load providing MOS transistor having a source connected to the source of the MOS transistor providing the load element and a gate connected to the gate of the MOS transistor providing the load element is provided, a pad to which a control voltage is supplied is connected to the drain of the MOS transistor and the control voltage from the pad is applied to the gates of the MOS transistors to provide a current mirror circuit.