US 12,431,184 B2
Memory system
Woongrae Kim, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Jul. 25, 2023, as Appl. No. 18/358,587.
Application 18/358,587 is a continuation of application No. 17/531,424, filed on Nov. 19, 2021, granted, now 11,749,333.
Claims priority of provisional application 63/123,703, filed on Dec. 10, 2020.
Claims priority of application No. 10-2021-0154680 (KR), filed on Nov. 11, 2021.
Prior Publication US 2023/0402086 A1, Dec. 14, 2023
Int. Cl. G11C 11/406 (2006.01); G06F 12/0811 (2016.01); G06F 12/14 (2006.01); G11C 29/42 (2006.01); G11C 29/44 (2006.01)
CPC G11C 11/40622 (2013.01) [G06F 12/0811 (2013.01); G06F 12/1433 (2013.01); G11C 11/40615 (2013.01); G11C 29/42 (2013.01); G11C 29/4401 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A memory system, comprising:
a normal memory area suitable for storing normal data;
a security memory area suitable for storing security data; and
a processor including a cache memory,
wherein the security memory area is allowed to be accessed, by the processor, only via the cache memory,
wherein the processor comprises a memory controller including a second row hammering detection circuit that counts activation numbers of rows of the security memory area in a full-row counting manner to detect rows to be refreshed.