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:
Oct. 19, 2010
Filed:
Dec. 28, 2004
Ji-eun Jang, Ichon-shi, KR;
Kee-teok Park, Ichon-shi, KR;
Ji-Eun Jang, Ichon-shi, KR;
Kee-Teok Park, Ichon-shi, KR;
Hynix Semiconductor Inc., Gyeonggi-do, KR;
Abstract
A semiconductor memory device for measuring a data access time by controlling data output operation, including: a pipe latch control unit for generating an input control signal based on a test mode signal; a pipe latch unit for receiving data and controlling the data according to a CAS latency in synchronization with a clock signal at a normal mode or passing the data without synchronization with the clock signal at a test mode based on the input control signal; an output control unit for generating an output node control signal based on the test mode signal; and an output unit for controlling an output data outputted from the pipe latch means according to the CAS latency in synchronization with the clock signal at the normal mode or passing the output data without synchronization with the clock signal at the test mode based on the output node control signal.