Appeal No. 97-0984
Application 08/546,345
appeal brief was filed, the examiner indicated that claim 5
contained allowable subject matter and withdrew the rejection
of claim 5 [answer, page 5]. Therefore, this appeal is now
limited to the rejection of claims 1-4.
The disclosed invention pertains to a power-on reset
circuit for resetting components of an integrated circuit
upon initiation of power to the integrated circuit or when
the supply voltage falls sufficiently during operation that
the circuit operation might be affected. One feature of the
invention is that the power-on reset circuit draws no current
in the steady state. Another feature of the invention is
that the power-on reset signal can remain high for a
relatively long period of time.
Representative claim 1 is reproduced as follows:
1. A power-on reset circuit comprising:
a reference node;
a voltage level detector for pulling down a reference
voltage at said reference node when a supply voltage is not
above ground voltage by a first predetermined level; and
a current source for applying a current to said reference
node when said supply voltage is above a second predetermined
level;
2
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