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:
Jul. 27, 1999
Filed:
Oct. 23, 1997
Kiminori Hayano, Tokyo, JP;
Yasuhiro Maeda, Kanagawa, JP;
NEC Corporation, Tokyo, JP;
Abstract
To fabricate a smaller memory system, a memory system includes a memory cell array having a first memory cell and a second memory cell, a first switching circuit connected to the first memory cell, a second switching circuit connected to the second memory cell, and a sense amplifier connected to the first and second switching circuits. The sense amplifier includes an N-type flip-flop circuit for selectively amplifying data from the first memory cell or the second memory cell, a P-type flip-flop circuit for selectively amplifying the data from the first memory cell or the second memory cell, and a first circuit formed between the N-type flip-flop circuit and the P-type flip-flop circuit. When data in the first memory cell is to be transferred, the first switching circuit is activated and the data from the first memory cell is transferred to the sense amplifier, and then the data is amplified by the sense amplifier. When data in the second memory cell is to be transferred, the second switching circuit is activated and the data from the second memory cell is transferred to the sense amplifier, and then the data is amplified by the sense amplifier.