Oscillators – With synchronizing – triggering or pulsing circuits – Triggering or pulsing
Reexamination Certificate
2006-11-14
2006-11-14
Mis, David (Department: 2817)
Oscillators
With synchronizing, triggering or pulsing circuits
Triggering or pulsing
C331S158000
Reexamination Certificate
active
07135939
ABSTRACT:
A semiconductor device includes an external oscillation circuit connected to an external resonator, a self-exciting oscillation circuit, and an oscillation clock monitoring circuit, the oscillation clock monitoring circuit monitors an oscillation state of the external resonator using a clock signal generated by the self-exciting oscillation circuit, and when judged that the oscillation state has been stabilized, the terminating signal of the waiting time for stabilization of oscillation is outputted to terminate the waiting time for stabilization of oscillation of a microcomputer forcedly.
REFERENCES:
patent: 5196810 (1993-03-01), Graether et al.
patent: 2002/0097099 (2002-07-01), Miyamoto
patent: 06-138975 (1994-05-01), None
patent: 09-093040 (1997-04-01), None
Koike Yoshihiko
Yoshida Shuji
Arent & Fox PLLC
Fujitsu Limited
Mis David
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