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:
Aug. 08, 2017
Filed:
Nov. 26, 2014
Xiuqiang Xu, Suzhou, CN;
Yin Guo, Tianjin, CN;
Shayan Zhang, Cedar Park, TX (US);
Wanggen Zhang, Suzhou, CN;
Xu Zhang, Tianjin, CN;
Yizhong Zhang, Suzhou, CN;
Xiuqiang Xu, Suzhou, CN;
Yin Guo, Tianjin, CN;
Shayan Zhang, Cedar Park, TX (US);
Wanggen Zhang, Suzhou, CN;
Xu Zhang, Tianjin, CN;
Yizhong Zhang, Suzhou, CN;
NXP USA, INC., Austin, TX (US);
Abstract
An integrated circuit that includes a processor also has an on-chip current test circuit that indirectly measures quiescent current in the processor. A supply voltage pin of the integrated circuit receives a supply voltage from an external test unit to provide power to the processor. The on-chip test circuit measures a voltage change across the processor during a predetermined test period T when the processor is isolated from the supply voltage and the clock signal is stopped. The voltage change provides an indication of quiescent current corresponding to the processor.