US 11,907,033 B2 · Adaptive power-on-reset generator systems and methods for programmable logic devices

Abstract

Systems and methods for providing adaptive power on reset (POR) signals for use with programmable logic devices (PLDs) and/or other semiconductor devices are disclosed. An example adaptive POR signal generator includes a logic device configured to detect a first supply voltage ramp traversal across a first threshold ramp voltage, detect a second supply voltage ramp traversal across a second threshold ramp voltage, and generate a POR signal based, at least in part, on a nominal operating voltage associated with the power supply and/or the supply voltage and/or on a ramp time associated with the first and second supply voltage ramp traversals. The second threshold ramp voltage is higher than the first threshold ramp voltage and the first and second threshold ramp voltages are lower than the nominal operating voltage.

Claims20

Dependent claims

An adaptive power on reset (POR) signal generator, comprising:

a ramp voltage selector configured to monitor a supply voltage provided by a power supply and generate a ramp voltage based, at least in part, on the monitored supply voltage;
and
a logic device configured to:
detect a first supply voltage ramp traversal across a first threshold ramp voltage based, at least in part, on the ramp voltage provided by the ramp voltage selector;
detect a second supply voltage ramp traversal across a second threshold ramp voltage, wherein the second threshold ramp voltage is higher than the first threshold ramp voltage and the first and second threshold ramp voltages are lower than a nominal operating voltage associated with the power supply and/or the supply voltage;
determine a time at which to generate a POR signal based, at least in part, on an amount of time between the first supply voltage ramp traversal and the second supply voltage ramp traversal;
and
generate the POR signal based on the determined time.

5 more elements

A method comprising:

detecting a first supply voltage ramp traversal across a first threshold ramp voltage based, at least in part, on a ramp voltage generated by a ramp voltage selector based, at least in part, on a supply voltage provided by a power supply and monitored by the ramp voltage selector;
detecting a second supply voltage ramp traversal across a second threshold ramp voltage, wherein the second threshold ramp voltage is higher than the first threshold ramp voltage and the first and second threshold ramp voltages are lower than a nominal operating voltage associated with the power supply and/or the supply voltage;
determining a time at which to generate a POR signal based, at least in part, on an amount of time between the first supply voltage ramp traversal and the second supply voltage ramp traversal;
and
generating the POR signal based on the determined time.

2 more elements

Dependencies are inferred from the claim text.

Adaptive power-on-reset generator systems and methods for programmable logic devices

Life of this patent

Adaptive power-on-reset generator systems and methods for programmable logic devices

Life of this patent

Abstract

Claims20