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:
Apr. 24, 2018

Filed:

Aug. 19, 2015
Applicant:

Integrated Device Technology, Inc., San Jose, CA (US);

Inventors:

Hui Li, Fremont, CA (US);

Teck Chuan Ng, San Jose, CA (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/03 (2006.01); H03L 7/099 (2006.01); H03B 5/32 (2006.01);
U.S. Cl.
CPC ...
H03K 3/0307 (2013.01); H03B 5/32 (2013.01); H03L 7/099 (2013.01);
Abstract

A timing device that includes an OTP NVM, a first periodic signal generator operable to generate a periodic signal having a first frequency, a second periodic signal generator operable to generate a periodic signal having a frequency that is lower than the first frequency, and selection logic. In a first operating mode, the selection logic is configured to output the first periodic signal at an output terminal as long as a crystal clock feedback signal is received at the input terminal and output the second periodic signal when the crystal clock feedback signal is not received at the input terminal. In a second operating mode, the selection logic is configured to output the first periodic signal as long as a output enable signal is received at the input terminal and not provide any output at the output terminal when the output enable signal is not received at the input terminal.


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