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:
Feb. 27, 2007
Filed:
Jul. 29, 2005
Ryuji Nishihara, Osaka, JP;
Masashi Agata, Osaka, JP;
Toshiaki Kawasaki, Osaka, JP;
Masanori Shirahama, Shiga, JP;
Ryuji Nishihara, Osaka, JP;
Masashi Agata, Osaka, JP;
Toshiaki Kawasaki, Osaka, JP;
Masanori Shirahama, Shiga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A semiconductor memory device includes: first and second bit cells for storing complementary data; a scan circuit for outputting a selected data signal; a bit-cell selector receiving the output of the scan circuit and selecting one of the bit cells; and a data write controlling circuit for controlling data writing. Write paths for all the bit cells for storing '0' are not selected and data is written only in a bit cell for storing '1', so that write operation performed in steps is achieved.