Power-up control for very low-power systems

Details Power-up control for very low-power systems Power-up control for very low-power systems

2011-05-31

2011-05-31

Donovan, Lincoln (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S142000

Reexamination Certificate

active

07952402

ABSTRACT:
A power-on-reset (POR) circuit may comprise a first circuit powered by a first supply voltage and configured to generate a second supply voltage based on the first supply voltage, the second supply voltage having a nominal value lower than a nominal value of the first supply voltage. The POR circuit may also include a second circuit powered by the second supply voltage and configured to generate a POR signal. The second circuit may be configured to assert the POR signal when the second supply voltage reaches a value that is sufficiently high for the second circuit to become operational, keep the POR signal asserted until the first supply voltage reaches a second value that is higher than the nominal value of the second supply voltage by a specified difference voltage value, and deassert the POR signal once the first supply voltage reaches the second value.

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