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:
Aug. 05, 1997
Filed:
Sep. 15, 1995
Toshiki Hisada, Yokohama, JP;
Hiroyuki Koinuma, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A semiconductor memory includes a plurality of memory cells aligned in rows and columns, a plurality of bit lines respectively connected to the columns of the plurality of memory cells, a plurality of switch circuits each having one end connected to a corresponding one of the plurality of bit lines, the plurality of switch circuits being selectively turned on in accordance with a column address signal input from an outside to identify each of the columns, a data line to which the other end of each of the plurality of switch circuits is commonly connected, a pulse generation circuit for detecting a change in level of the column address signal with respect to first and second circuit thresholds different from each other to generate a pulse signal, the first circuit threshold being used for detecting a change in address signal from one level to the other level, and the second circuit threshold being used for detecting a change in address signal from the other level to one level, and a data detection circuit, connected to the data line and controlled by the pulse signal generated in accordance with the pulse generation circuits, for amplifying a potential of the data line to detect data.