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:
Mar. 12, 2013
Filed:
Feb. 08, 2012
David Zimlich, Boise, ID (US);
David Zimlich, Boise, ID (US);
Micron Technology, Inc., Boise, ID (US);
Abstract
A method and circuitry for adjusting the delay of a variable delay line (VDL) in a delay locked loop (DLL) or other delay element or subcircuit on an integrated circuit is disclosed. Such delay circuitry will inherently have a delay which is a function of temperature. Such temperature-dependent delays are compensated for by adjusting the power supply voltage of the VDL, delay element, or subcircuit. Specifically, a temperature sensing stage is used to sense the temperature of the integrated circuit. Information concerning the sensed temperature is sent to a regulator which derives the local power supply voltage from the master power supply voltage, Vcc, of the integrated circuit. If the temperature sensed is relatively high, the regulator increases the local power supply voltage, thus decreasing the delay and offsetting the increase in delay due to temperature.