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. 10, 2017
Filed:
Jul. 10, 2013
Apple Inc., Cupertino, CA (US);
Brian S. Park, San Jose, CA (US);
Patrick D. McNamara, San Francisco, CA (US);
Kwang M. Lee, Saratoga, CA (US);
Meng C. Chong, Milpitas, CA (US);
Geertjan Joordens, Sunnyvale, CA (US);
Raman S. Thiara, San Jose, CA (US);
Anh T. Hoang, Fremont, CA (US);
John P. Gonzalez, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A method and apparatus for power glitch detection in IC's is disclosed. In one embodiment, a method includes a detection circuit in an IC detecting a voltage transient wherein a value of a supply voltage has at least momentarily fallen below a reference voltage value. Responsive thereto, the detection circuit may cause a logic value to be stored in a register indicating that the detection circuit has detected the supply voltage falling below the reference voltage. The IC may include a number of detection circuits coupled to the register, each of which may provide a corresponding indication of detecting the supply voltage falling below the reference voltage. The detection circuits may be placed at different locations, and thus reading the register may yield information indicating the locations where, if any, such voltage transients occurred.