F. Chau & Associates, LLC
Semiconductor memory device for controlling operation of delay-locked loop circuit
A semiconductor memory device for controlling an operation of a delay-locked loop (DLL) circuit is provided. The semiconductor memory device includes a DLL circuit that receives an external clock signal and that performs a locking operation on the external clock signal and an internal clock signal, thereby obtaining a locked state. A control unit controls the DLL circuit to constantly maintain the locked state during an updating period of an auto-refresh period of an auto-refresh operation for refreshing memory banks.
Samsung Electronics Co., Ltd.
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Jun-Bae Sin-Ho Seong-Jin Young-Uk
Kim Kim Jang Chang