US 11,742,009 B2
Semiconductor device and semiconductor system related to write leveling operations
Hyun Seung Kim, Icheon-si (KR)
Assigned to SK hynix Inc., Icheon-si (KR)
Filed by SK hynix Inc., Icheon-si (KR)
Filed on Mar. 7, 2022, as Appl. No. 17/688,420.
Claims priority of application No. 10-2021-0159655 (KR), filed on Nov. 18, 2021.
Prior Publication US 2023/0154508 A1, May 18, 2023
Int. Cl. G11C 7/22 (2006.01)
CPC G11C 7/222 (2013.01) [G11C 7/225 (2013.01); G11C 2207/2272 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A semiconductor device comprising:
a pre-pulse generation circuit configured to generate a pre-pulse, based on a write/read shifting pulse and a write leveling activation signal;
a write/read control signal generation circuit configured to generate a write/read control signal, based on the pre-pulse and a division clock; and
a write leveling control circuit configured to generate detection data including information on a phase difference between a data clock and a system clock, based on the pre-pulse and the division clock,
wherein a pulse width of the pre-pulse is set based on a frequency ratio of the system clock and the data clock when a write/read operation is performed.