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:
Apr. 01, 2014
Filed:
May. 03, 2012
Applicants:
Jun Zhang, Suzhou, CN;
Xiuqiang Xu, Suzhou, CN;
Inventors:
Jun Zhang, Suzhou, CN;
Xiuqiang Xu, Suzhou, CN;
Assignee:
Freescale Semiconductor, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 5/00 (2006.01); G01R 19/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An oscillator circuit generates a voltage signal. The magnitude of the voltage signal is measured and compared with predetermined upper and lower voltage signals by an internal test circuit. If the magnitude of the voltage signal is between the predetermined upper and lower voltage signals, then a pass test status signal is generated. If the magnitude of the voltage signal is not between the predetermined upper and lower voltage signals then a fail test status signal is generated.