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. 24, 1989
Filed:
Mar. 17, 1987
Kouji Ueno, Inagi, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A memory device comprises an access circuit for setting a selected one of word lines to a low (or high) level responsive to a row address and for setting a selected one of bit lines to a high (or low) level responsive to a columnm address so as to designate a memory cell within a memory cell array, a comparing circuit driven by a constant current source for reading out information from the designated memory cell via the bit lines by comparing the bit line level with a reference level, an output circuit for outputting the information read out by the comparing circuit, and a control circuit for either setting all of the word lines and bit lines to a high level or setting all of the word lines and bit lines to have a high impedance and setting the impedance at an output of the output circuit to a high impedance when the memory device is disabled, so as to reduce the power consumption when the memory device is disabled.