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. 09, 2008
Filed:
Mar. 16, 2006
Hiroaki Tanizaki, Itami, JP;
Hideto Hidaka, Tokyo, JP;
Hiroaki Tanizaki, Itami, JP;
Hideto Hidaka, Tokyo, JP;
Renesas Technology Corp., Tokyo, JP;
Abstract
A path routing from a write current source supplying a write current through an internal data line, a bit line and a source line to a reference potential except a memory cell is configured to have a constant resistance independent of a memory cell position selected in a memory array, and each of the resistance value of the current path between the memory cell and the write current source and the resistance value of the current path between the selected memory cell and the reference potential node is set to 500Ω or lower. A nonvolatile semiconductor memory device having improved reliability of data read/write is achieved.