Apparatuses and methods for deactivating a delay locked loop update in semiconductor devices
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United States of America Patent
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Jun 13, 2023
Grant Date -
Nov 18, 2021
app pub date -
Jun 29, 2021
filing date -
Sep 3, 2019
priority date (Note) -
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Abstract
A semiconductor device may include a delay locked loop (DLL) control circuit coupled to an update trigger generator and a DLL update circuit. The DLL control circuit may receive an update trigger signal and an internal refresh signal and configured to activate the DLL update circuit responsive to an update trigger in the update trigger signal and deactivate the DLL update circuit responsive to an active internal refresh signal. The DLL update circuit may perform DLL update to one or more memory cell arrays when activated and not perform DLL update to the memory cell arrays when deactivated. The DLL control circuit may reactivate the DLL update circuit once the internal refresh signal becomes inactive. In other scenarios, once the DLL update circuit is deactivated, the DLL update circuit stays deactivated until the next update trigger in the update trigger signal.
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