Semiconductor memory device and method for operating the same
AssigneeHynix Semiconductor Inc.
InventorHoon CHOI
Life of this patent
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Abstract
A semiconductor memory device has a DLL circuit capable of suppressing EMI without distorting a DLL clock required in high-speed operation. The semiconductor memory device includes a delay locked loop (DLL) circuit configured to be responsive to a system clock to output a DLL clock having a phase that is changed when electromagnetic interference (EMI) is detected, for the DLL clock to have frequencies within a delay locking range, and a data output circuit configured to output data in synchronization with the DLL clock.
Claims2
A semiconductor memory device, comprising a delay locked loop (DLL) circuit configured to be responsive to a system clock to output a DLL clock having a phase that changes when electromagnetic interference (EMI) is detected, for the DLL clock to have frequencies within a delay locking range and a data output circuit configured to output data in synchronization with the DLL clock.
2-25. (canceled)
Dependencies are inferred from the claim text.