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. 20, 2019
Filed:
Sep. 14, 2016
Freescale Semiconductor, Inc., Austin, TX (US);
NXP USA, Inc., Austin, TX (US);
Abstract
An integrated circuit includes a plurality of state retention power gating (SRPG) flip-flops coupled in a first chain, wherein the first chain has a first scan input and a first scan output; a pseudo random pattern generator (PRPG) configured to generate test patterns in response to seeds; a multiplexer (MUX) coupled between the PRPG and the first scan input and coupled to receive a select signal; and response compression logic coupled to the first scan output and configured to generate a test signature in response to an output pattern provided at the first scan output. The MUX is configured to, when the select signal has a first value, couple a first output of the PRPG to the first scan input, and, when the select signal has a second value, couple an inversion of the first output of the PRPG to the first scan input.