Method and apparatus for providing a power-on reset signal

Details Method and apparatus for providing a power-on reset signal Method and apparatus for providing a power-on reset signal

2007-04-03

2007-04-03

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S198000

Reexamination Certificate

active

10968018

ABSTRACT:
A power-on reset circuit and method for the same may provide reset signals during power-up and/or power-down cycles, to reduce the chances of error. An error may occur, for example, due to voltage fluctuations and/or the ambient temperature of circuit components. Reducing the chances of error during a power-up cycle may include setting an output node of a circuit to a reset state when a power supply voltage reaches a first voltage level and outputting a power-on reset signal to the output node when the power supply voltage equals a second voltage level higher than the first. Reducing the chances of error during a power-down cycle may include setting the output node to a reset state when the output node reaches a third voltage level between the first and second voltage levels.

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