Invention Grant
US08392741B2 Latency control circuit and semiconductor memory device including the same 有权
延迟控制电路和包括其的半导体存储器件

Latency control circuit and semiconductor memory device including the same
Abstract:
A latency control circuit includes a delay unit configured to delay an input signal for a delay corresponding to a phase difference between an external clock and an internal clock and generate a delayed input signal, a delay information generation unit configured to generate a delay information based on a latency information and a delay amount of the input signal caused by a chip including the latency control circuit, a shift unit configured to shift the delayed input signal for a time period corresponding to the delay information in synchronism with the internal clock and an asynchronous control unit configured to selectively control the shift unit to output the delayed input signal without performing a shift operation.
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