Clock signal detection circuit and semiconductor integrated...

Details Clock signal detection circuit and semiconductor integrated... Clock signal detection circuit and semiconductor integrated...

2006-02-21

2006-02-21

Callahan, Timothy P. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By presence or absence pulse detection

C327S020000, C327S108000, C326S082000

Reexamination Certificate

active

07002377

ABSTRACT:
A clock signal detection circuit is provided that can reliably detect whether or not a clock signal is supplied with a reduced circuit scale and reduced power consumption. The clock signal detection circuit comprises: a tristate buffer circuit that generates an output signal of predetermined potential when a clock signal is in a first level, and that sets the output terminal to the high impedance state when the clock signal is in a second level; a resistor disposed between the output terminal of the tristate buffer circuit and a different potential from the predetermined potential; and a buffer circuit that generates a clock signal detection result in accordance with the output potential of the tristate buffer circuit,

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