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:
Jul. 06, 2004
Filed:
Sep. 24, 2002
Maheen A. Samad, Sunnyvale, CA (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
A V power-up detection circuit is provided having a p-channel transistor having a source coupled to a V voltage supply terminal and a gate coupled to a ground supply terminal. A first resistor or a diode element is coupled between the drain of the p-channel transistor and the ground supply terminal. An n-channel transistor has a source coupled to the ground supply terminal and a gate coupled to the drain of the p-channel transistor. A second resistor is coupled between a drain of the n-channel transistor and the V voltage supply terminal. A trigger circuit is coupled to the drain of the n-channel transistor. As the V supply voltage increases during power-up, the p-channel and n-channel transistors are both turned on. At this time, the trigger circuit asserts a control signal that enables an associated circuit to operate in response to the V supply voltage.