Abstract:
A delay circuit of a semiconductor apparatus includes a control signal generation block configured to output a control signal having an analog voltage level in response to an input signal, and an input/output block configured to delay the input signal by a delay amount based on the analog voltage level of the control signal, and output a resultant signal.
Abstract:
An output enable signal generation circuit includes an output enable reset signal generation unit configured to enable an output enable reset signal in response to an external clock signal, a DLL locking signal, and a reset signal, an output enable reset signal delay unit configured to delay the output enable reset signal and output the delayed output enable reset signal, a counter unit configured to output the count of the external clock signal as a value in response to the output enable reset signal and the delayed output enable reset signal, a read command delay unit configured to delay a read command and output the delayed read command, and an output enable signal output unit configured to shift the delayed read command in synchronization with a DLL clock signal and output an output enable signal, according to control of CL and the count value.
Abstract:
A system includes a memory device, a controller, and a power supply. The controller stores a write data in the memory device, and generates a voltage control signal by comparing a read data outputted from the memory device with the write data. The power supply controls a level of a power supply voltage supplied to the memory device in response to the voltage control signal.
Abstract:
A delay-locked loop (DLL) circuit having improved phase correction performance includes a variable delay unit configured to generate a DLL clock signal by delaying an input clock signal by a varied delay time in response to a delay control signal at timing corresponding to an update cycle signal, a delay model configured to generate a feedback clock signal by delaying the DLL clock signal for a predetermined delay time, a phase detection unit configured to output a result of the detection of the phase of the feedback clock signal based on a reference clock signal as the delay control signal, and an update cycle control unit configured to determine whether a cycle has been shifted or not in response to an external clock signal and the delay control signal and shift a cycle where the update cycle signal is generated based on a result of the determination.