Sequence-independent power-on reset for multi-voltage circuits

Details Sequence-independent power-on reset for multi-voltage circuits Sequence-independent power-on reset for multi-voltage circuits

2006-10-03

2008-10-07

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S142000, C327S198000

Reexamination Certificate

active

07432748

ABSTRACT:
A power-on reset (“POR”) methodology and circuit for an electronic circuit using multiple supply voltage domains asserts a reset signal upon ramp up of the first supply voltage signal, maintains the reset signal until all of the supply voltage signals have ramped up, and de-asserts the reset signal after all of the supply voltage signals have ramped up. Practical embodiments of the POR circuit include a control circuit that reduces static and/or dynamic current leakage associated with the operation of the POR circuit.

REFERENCES:
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patent: 6967522 (2005-11-01), Chandrakasan et al.
patent: 2004/0012419 (2004-01-01), Kim et al.
patent: 2004/0036514 (2004-02-01), Kwon

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