The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 19, 2020

Filed:

Mar. 12, 2019
Applicant:

Nxp Usa, Inc., Austin, TX (US);

Inventors:

Robert Matthew Mertens, Austin, TX (US);

James Robert Feddeler, Lake Village, IN (US);

Stefano Pietri, Austin, TX (US);

Assignee:

NXP USA, Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/22 (2006.01); H03K 19/0185 (2006.01); H03K 3/356 (2006.01); H03K 3/037 (2006.01);
U.S. Cl.
CPC ...
H03K 17/223 (2013.01); H03K 3/037 (2013.01); H03K 3/356113 (2013.01); H03K 19/018528 (2013.01);
Abstract

A method of powering up a circuit includes powering up a latch circuit in a known latch state by applying a first power supply voltage differential of a first voltage domain across power supply terminals of the latch circuit. A current diode inhibits current diode in a current path between a latch node of the latch circuit and a power supply terminal when the power supply voltage differential is below a threshold voltage during the powering up in which the inhibiting prevents the latch circuit from switching from the known latch state during the powering up.


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