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.

Date of Patent:
Sep. 23, 2025

Filed:

Nov. 14, 2023
Applicant:

SK Hynix Inc., Icheon-si, KR;

Inventor:

Choung Ki Song, Icheon-si, KR;

Assignee:

SK hynix Inc., Icheon-si, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 7/10 (2006.01); G11C 7/22 (2006.01); H01L 23/00 (2006.01); H01L 25/065 (2023.01); H10B 80/00 (2023.01);
U.S. Cl.
CPC ...
G11C 7/1039 (2013.01); G11C 7/1063 (2013.01); G11C 7/222 (2013.01); H01L 24/08 (2013.01); H01L 24/48 (2013.01); H01L 25/0657 (2013.01); H01L 2224/08111 (2013.01); H01L 2224/08145 (2013.01); H01L 2224/48132 (2013.01); H01L 2224/48147 (2013.01); H01L 2225/06506 (2013.01); H01L 2225/0651 (2013.01); H01L 2924/1431 (2013.01); H01L 2924/1434 (2013.01); H01L 2924/15311 (2013.01); H10B 80/00 (2023.02);
Abstract

A buffer chip includes: a chip select signal reception circuit configured to receive chip select signals transmitted from a memory controller; a command address reception circuit configured to receive command address signals transmitted from the memory controller; a chip select signal transmission circuit configured to transmit the chip select signals to a plurality of memory chips; a command address transmission circuit configured to transmit the command address signals to the plurality of memory chips; and a command address fixing circuit configured to fix levels of at least one of the command address signals transmitted by the command address transmission circuit when the chip select signals are deactivated for a predetermined time or more.


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