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. 31, 2021
Filed:
Feb. 28, 2020
International Business Machines Corporation, Armonk, NY (US);
Franco Motika, Hopewell Junction, NY (US);
Richard Frank Rizzolo, Red Hook, NY (US);
Paul Jacob Logsdon, Poughkeepsie, NY (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
Examples described herein provide a computer-implemented method that includes initiating a logic built-in self-test (LBIST) of a device under test (DUT). The method further includes performing latch state counting using a multiple input signature register (MISR) of the DUT, the performing responsive to the MISR being in a counter mode. The method further includes performing a latch transition counting of latches of the DUT using the MISR of the DUT and a storage latch, the performing responsive to the MISR being in the counter mode. The method further includes performing a latch count comparison by comparing an output of the MISR responsive to the MISR being in the counter mode to an output of a count compare register, the output of the count compare register representing a desired MISR state.