Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Synchronizing
Reexamination Certificate
2004-11-29
2009-06-09
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Synchronizing
C327S198000
Reexamination Certificate
active
07545186
ABSTRACT:
A reset circuit includes a power supply detection circuit, a power-down detection circuit, and an output circuit. The power supply detection circuit outputs a first signal when a first voltage according to a power supply voltage is higher than a first threshold and outputting a second signal when the first voltage is lower than the first threshold during power-on and power-down. The power-down detection circuit outputs a third signal when a second voltage according to the power supply voltage becomes lower than a second threshold after the second signal is outputted during power-down. The output circuit outputs a power-on reset signal which changes from low to high when the first signal is outputted during power-on and outputs a power-down reset signal which changes from low to high when the third signal is outputted during power-down.
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Suzuki Hideaki
Yamazaki Hirokazu
Arent & Fox LLP
Donovan Lincoln
Fujitsu Microelectroncis Limited
Hiltunen Thomas J
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