| 摘要 |
A clock generator to produce internal clock signals with a controlled pulse width in a synchronous semiconductor memory device. The clock generator includes a clock input circuit receiving an external clock signal, a reference voltage signal and an option signal, and outputting first and second clock signals; a clock driver receiving the first clock signal and outputting an internal clock signal in response to the option signal; and a detector receiving the second clock signal and outputting the option signal in response to a control signal.
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