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. 04, 2007
Filed:
Oct. 11, 2005
Applicant:
Yasushi Kameda, Yokosuka, JP;
Inventor:
Yasushi Kameda, Yokosuka, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 11/34 (2006.01); G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A clamp circuit is connected to one-side ends of first and second bit lines which are adjacent in a memory cell array and a data cache is connected to the other ends thereof. The first and second bit lines are selectively divided into plural portions by use of first and second switching elements. The data cache, clamp circuit and first and second switching elements are controlled by use of a control circuit and the bit line to which a memory cell of an address to be written is connected is precharged by use of the clamp circuit or data cache and the other bit line is shielded by the clamp circuit.