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:
Jan. 13, 2015
Filed:
Oct. 04, 2013
Stmicroelectronics (Crolles 2) Sas, Crolles, FR;
Stmicroelectronics International N.v., Amsterdam, NL;
Kallol Chatterjee, Gananagar, IN;
Nitin Agarwal, Kanpur, IN;
Junaid Yousuf, Srinagar, IN;
Nitin Gupta, Noida, IN;
Pierre Dautriche, Montbonnot, FR;
STMicroelectronics International N.V., Amsterdam, NL;
STMicroelectronics (Crolles 2) SAS, Crolles, FR;
Abstract
A variable frequency clock generator. In aspects, a clock generator includes a droop detector circuit configured to monitor a voltage supply to an integrated circuit. If the supply voltage falls below a specific threshold, a droop voltage flag may be set such that a frequency-locked loop is triggered into a droop voltage mode for handling the voltage droop at the supply voltage. In response, a current control signal that is input to an oscillator that generates a system clock signal is reduced by sinking current away from the current control signal to the oscillator. This results in an immediate reduction on the system clock frequency. Such a state remains until the voltage droop has dissipated when the current path is removed for sinking some of the current.