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CLOCK GENERATION CIRCUIT, CONTROL METHOD OF CLOCK GENERATION CIUCUIT, CLOCK REPRODUCING CIRCUIT, SEMICONDUCTOR MEMORY DEVICE, AND DYNAMIC RANDOM ACCESS MEMORY
CLOCK GENERATION CIRCUIT, CONTROL METHOD OF CLOCK GENERATION CIUCUIT, CLOCK REPRODUCING CIRCUIT, SEMICONDUCTOR MEMORY DEVICE, AND DYNAMIC RANDOM ACCESS MEMORY
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机译:时钟产生电路,时钟产生电路的控制方法,时钟再现电路,半导体存储器和动态随机存取存储器
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摘要
A DLL circuit or the like is configured so as to be capable of measuring the optimum number of cycles for a delay amount from the input of an external clock to the output of data through the use of a variable delay circuit and performing lock according to the measured number of cycles, whereby a clock generation circuit having a wide lock range can be implemented regardless of the performance of the variable delay circuit and a clock access time.
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