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. 04, 2004

Filed:

Oct. 30, 2001
Applicant:
Inventors:

Bruno Gailhard, Trets, FR;

Olivier Ferrand, Puyloubier, FR;

Assignee:

STMicroelectronics SA, Montrouge, FR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/02 ;
U.S. Cl.
CPC ...
H03B 5/02 ;
Abstract

A generator includes an oscillator for producing a clock signal from an N-bit control number. The oscillator includes a first group of cells, with each cell including at least one series connected inverter. A first selection circuit selects a variable number of the cells as a function of the most significant bits of the control number. The oscillator also includes a second group of cells, with each cell including at least one series connected inverter. A second selection circuit selects one of the cells as a function of the least significant bits of the control number. The selected cells of the first and second groups of cells are series connected to form a chain of inverters.


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