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. 20, 2001
Filed:
May. 27, 1999
Yoichi Nishida, Fukuoka, JP;
Tomonori Kataoka, Oonojo, JP;
Ikuo Fuchigami, Fukuoka, JP;
Tomoo Kimura, Fukuoka, JP;
Junji Michiyama, Kasuya-gun, JP;
Satoshi Koutaka, Kumamoto, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
There is provided a nonvolatile semiconductor memory which is capable of operating stably and performing high-speed access operation. A timing generation means,for generating timing signals which make a memory core unit,perform access operation uses first and second clocks of the same cycle and different phases. The timing generation means,generates timing signals for at least one first-half event among a plurality of read access events, according to the first clock, the phase of which precedes a phases of the second clock, and generates timing signals used for processing the remaining events, according to the second clock.