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:
Jun. 30, 2009
Filed:
Mar. 20, 2007
Dong-woo Lee, Suwon-si, KR;
Jung-yong Choi, Seongnam-si, KR;
Dong-woo Lee, Suwon-si, KR;
Jung-yong Choi, Seongnam-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
A method of controlling On-Die Termination (ODT) resistors of memory devices sharing signal lines is provided. The ODT controlling method comprises setting an ODT control enable signal of each of the memory devices and address/command or data termination information to a mode register of the corresponding memory device, and controlling resistances of ODT resistors of the signal lines in the memory devices in response to the address/command or data termination information and termination addresses. When only one of the memory devices is activated, ODT resistors of the activated memory device are set to a first resistance. When all the memory devices are activated, ODT resistors of the memory devices are set to a second resistance.