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. 01, 1987
Filed:
Jan. 14, 1986
Kazuhiko Hashimoto, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A semiconductor memory device of the invention is switched to an operation mode or a standby mode in response to a control signal. When the control signal indicates the standby mode, a voltage converter circuit becomes inoperative, and an external power source voltage is directly supplied to an internal circuit (e.g., a memory circuit). However, in the standby mode the internal circuit has low power consumption, and the voltage converter circuit has no power consumption, thus rendering total power consumption of the semiconductor device low. When the control signal indicates the operation mode, the voltage converter circuit drops the external power source voltage and supplies it to the internal circuit. Thus, no hot electrons are generated in elements constituting the internal circuit (e.g., CMOS transistors), and degradation of the elements is prevented.