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. 21, 2009
Filed:
Nov. 02, 2006
Takashi Oshikiri, Osaka, JP;
Takashi Oshikiri, Osaka, JP;
MegaChips LSI Solutions Inc., Osaka-shi, JP;
Abstract
The present invention provides a memory device of a type that outputs a ready signal to the outside, and that is capable of achieving an enhanced data transfer rate and a uniform latency time. A memory device according to the present invention includes a ready signal sending portion, and the ready signal sending portion monitors a memory portion to detect the memory portion becoming ready for reading or writing of specified data. The ready signal sending portion generates a first ready signal that changes from a busy state to a ready state after the detection and an enabling signal that changes from a disable state to an enable state on the basis of a preset ready generating timing value. When the first ready signal is in the ready state and the enabling signal is in the enable state, the ready signal sending portion sends to the outside a second ready signal that is in a ready state.