On-chip stuck-at fault detector and detection method

Details On-chip stuck-at fault detector and detection method On-chip stuck-at fault detector and detection method

2011-01-04

2011-01-04

Britt, Cynthia (Department: 2117)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital logic testing

C714S733000

Reexamination Certificate

active

07865790

ABSTRACT:
An on-chip stuck-at fault detector in an integrated circuit using a test circuit for critical path testing can include a sequence circuit having a first sequential circuit and a second sequential circuit to sensitize the critical path between a source sequential circuit and a destination sequential circuit, an analyzer circuit for capturing an output from the destination sequential circuit and comparing a signal between the destination sequential circuit and the analyzer circuit at predetermined clock cycles, and a controller for strobing the analyzer circuit at the predetermined clock cycles. The first sequence and second circuits can both be initialized to a zero mode (e.g., x=0 and y=0). Thus, no stuck-at faults are determined if the destination sequential circuit and an analyzer sequential circuit in the analyzer circuit have different values and a zero result is captured at a sticky-bit flip flop.

REFERENCES:
patent: 6201829 (2001-03-01), Schneider
patent: 6223314 (2001-04-01), Arabi et al.
patent: 7065684 (2006-06-01), Chan
patent: 7308632 (2007-12-01), Verma et al.
patent: 2002/0084797 (2002-07-01), Samaan
patent: 2003/0070118 (2003-04-01), Nakao et al.
patent: 2005/0235177 (2005-10-01), Ohara et al.
patent: 2009/0112557 (2009-04-01), King et al.
patent: 2001066352 (2001-03-01), None
U.S. Appl. No. 12/043,833, filed Mar. 6, 2008, Jairam et al.
U.S. Appl. No. 11/498,368, filed Aug. 3, 2006, Jairam et al.

Affiliated with

Also associated with

Rating

On-chip stuck-at fault detector and detection method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with On-chip stuck-at fault detector and detection method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On-chip stuck-at fault detector and detection method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2695608