US 11,901,027 B2
Memory system including a sub-controller and operating method of the sub-controller
Jong Joo Lee, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Nov. 18, 2021, as Appl. No. 17/529,970.
Claims priority of application No. 10-2021-0073738 (KR), filed on Jun. 7, 2021.
Prior Publication US 2022/0392559 A1, Dec. 8, 2022
Int. Cl. G11C 29/42 (2006.01); G11C 8/18 (2006.01); G11C 29/12 (2006.01)
CPC G11C 29/42 (2013.01) [G11C 8/18 (2013.01); G11C 29/1201 (2013.01); G11C 29/12015 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A memory system comprising:
a main controller configured to transmit main data having N bits through a main channel, where N is a positive integer;
memory devices configured to store sub-data constituting the main data and transmit the sub-data through sub-channels; and
a sub-controller configured to communicate with the main controller through the main channel and communicate with the memory devices through the sub-channels,
wherein the sub-controller is further configured to:
generate the sub-data each having n bits where n is a positive integer less than N, by dividing the main data,
generate sub-data strobe clocks with a lower frequency than a main data strobe clock synchronized with the main data, and
transmit/receive the sub-data to/from the memory devices in synchronization with the sub-data strobe clocks.