Semiconductor integrated circuit device

Details Semiconductor integrated circuit device Semiconductor integrated circuit device

1995-09-29

1997-09-02

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327295, 327244, 327245, 331DIG2, H03L 706

Patent

active

056636687

ABSTRACT:
In an internal clock signal generation circuit, a plurality of internal clock signals of different phases are generated based on an external clock signal. The internal clock signals are synchronized with the external clock signal by a PPL circuit. The plurality of internal clock signals are respectively supplied to a plurality of internal circuit blocks. Since the phases of the generated internal clock signals are different the phases of the internal clock signals arriving at the internal circuit blocks can be matched even if delays of the signals between the internal clock signal generation circuit and the plurality of internal circuit blocks are different. Thus, clock skews between the plurality of internal clock signals can be reduced and the phase of the internal clock signal and the phase of the external clock signal can be synchronized.

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