US 11,915,738 B2
Memory with capability to detect rows that are prone to data loss, memory system and operation method of memory
Min Su Park, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Feb. 22, 2023, as Appl. No. 18/172,340.
Application 18/172,340 is a division of application No. 16/997,457, filed on Aug. 19, 2020, granted, now 11,621,028.
Claims priority of application No. 10-2020-0029977 (KR), filed on Mar. 11, 2020.
Prior Publication US 2023/0197136 A1, Jun. 22, 2023
Int. Cl. G11C 11/406 (2006.01); G11C 29/44 (2006.01); G11C 11/408 (2006.01); G11C 11/4076 (2006.01); G11C 11/4091 (2006.01)
CPC G11C 11/40615 (2013.01) [G11C 11/4076 (2013.01); G11C 11/4085 (2013.01); G11C 11/4091 (2013.01); G11C 11/40618 (2013.01); G11C 29/44 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An operating method of a memory, the operating method comprising:
classifying, as a target row, a row among multiple rows, that is susceptible to data loss as a result of activity of an adjacent row;
receiving a precharge command;
performing a precharge operation in response to the precharge command; and
refreshing the target row in response to the precharge command,
wherein the refreshing of the target row comprises:
counting the number of active commands applied;
checking that a result of the counting is greater than or equal to a threshold, in response to the precharge command;
activating a target row active signal for activating the target row; and
activating a target row precharge signal for precharging the target row,
wherein the target row active signal is activated after a first delay time from a time at which the precharge command is applied.