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.
Patent No.:
Date of Patent:
Aug. 02, 2016
Filed:
Oct. 15, 2014
Xilinx, Inc., San Jose, CA (US);
XILINX, INC., San Jose, CA (US);
Abstract
A device for controlling a power-on reset signal can include a constant current source, for controlling a reference current that is independent of a supply voltage, and a trip point detector circuit driven by the reference current. The trip point detector circuit detects when the supply voltage of the device exceeds a first trip point voltage, and de-asserts the power-on reset signal when the supply voltage exceeds the first trip point voltage. The first trip point voltage can be controlled by a sum of a threshold voltage of a first n-type metal-oxide-semiconductor transistor, a voltage drop across a first resistor, and a threshold voltage of a first p-type metal-oxide-semiconductor transistor. The device may further include a hysteresis circuit, for detecting when the supply voltage falls below a second trip point voltage and causing the trip point detector circuit to reassert the power-on reset signal.