Programmable POR circuit with two switching thresholds

Details Programmable POR circuit with two switching thresholds Programmable POR circuit with two switching thresholds

2005-05-24

2005-05-24

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

Reexamination Certificate

active

06897689

ABSTRACT:
A power on reset circuit (POR) includes a first reset circuit for delivering a first reset signal when a supply voltage of the POR circuit is between a first low threshold and a first high threshold, and a second reset circuit for delivering a second reset signal when the supply voltage is between a second low threshold and a second high threshold. The second high threshold is less than the first high threshold. The POR circuit further includes at least one electrically erasable and programmable non-volatile memory cell. A delivery circuit outputs the first reset signal or the second reset based upon whether the at least one electrically erasable and programmable non-volatile memory cell is in an erased or programmed state. The POR circuit has a threshold for outputting the first or second reset signal that is programmable according to the intended application.

REFERENCES:
patent: 5831460 (1998-11-01), Zhou
patent: 5886549 (1999-03-01), Naura
patent: 6204703 (2001-03-01), Kwon
patent: 6252442 (2001-06-01), Malherbe
patent: 20010048328 (2001-12-01), Sato
patent: 0475066 (1992-03-01), None

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