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:
Jan. 01, 2013
Filed:
Jun. 30, 2008
Beom-ju Shin, Kyoungki-do, KR;
Sang-sic Yoon, Kyoungki-do, KR;
Beom-Ju Shin, Kyoungki-do, KR;
Sang-Sic Yoon, Kyoungki-do, KR;
Hynix Semiconductor Inc., , KR;
Abstract
A semiconductor memory device is capable of outputting a preset logic level through an EDC pin according to an operation mode during an initial operation, and providing a stable operation according to the specification of the semiconductor memory device just after the input of a data clock (WCK). The semiconductor memory device includes an output circuit configured to output a synchronous data in response to a data clock when the data clock is enabled, and output an asynchronous data when the data clock is disabled, and a data clock detection circuit configured to control outputting the asynchronous data by checking whether the data clock is in a stable state or not.