US 12,323,139 B2
Apparatus, memory device and method for storing parameter codes for asymmetric on-die-termination
Daehyun Kwon, Seoul (KR); Hyejung Kwon, Seoul (KR); Hyeran Kim, Uiwang-si (KR); and Chisung Oh, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Dec. 20, 2023, as Appl. No. 18/390,224.
Application 18/390,224 is a continuation of application No. 17/591,093, filed on Feb. 2, 2022, granted, now 11,888,476.
Claims priority of application No. 10-2021-0042234 (KR), filed on Mar. 31, 2021; and application No. 10-2021-0076234 (KR), filed on Jun. 11, 2021.
Prior Publication US 2024/0120921 A1, Apr. 11, 2024
Int. Cl. H03K 19/0175 (2006.01); H03K 19/00 (2006.01); H03K 19/017 (2006.01); H03K 19/17736 (2020.01); H03K 19/17772 (2020.01)
CPC H03K 19/01742 (2013.01) [H03K 19/0005 (2013.01); H03K 19/1774 (2013.01); H03K 19/17772 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of setting a current operating condition of an apparatus, the method comprising:
storing a first parameter code corresponding to a first operating condition with respect to an operating parameter in a mode register as a default operating condition;
updating the mode register with a second parameter code corresponding to a second operating condition with respect to the operating parameter;
setting the current operating condition as the first operating condition using the first parameter code; and
setting the current operating condition as the second operating condition using the second parameter code,
wherein the operating parameter relates to an on-die termination (ODT) circuit of the apparatus, and
when the ODT circuit is set to a first ODT state and an external device connected to a signal line connected to the ODT circuit is set to a second ODT state, the first parameter code is provided in a symmetric ODT where the second ODT state corresponds to the first ODT state, and the second parameter code is provided in an asymmetric ODT where the second ODT state is different from the first ODT state.