Hybrid BIST Based on Weighted Pseudo - Random Testing : A N ew Test Resource
نویسنده
چکیده
This paper presents aa new test resource partitioningg scheme that is aa hybridd approachh betweenn external testingg andd BIST. It reduces tester storage requirements anddtesterbandwidthhrequirementsbyordersof magnitude comparedd too conventional external testing, but requires muchh less areaa overheadd thann aa full BIST implementationn providingg the same fault coverage. The proposedd approachh is basedd onn weightedd pseudo-random testingg andd uses aa novel approachh for compressingg andd storingg the weight sets. Three levels of compressionn are usedd too greatly reduce test costs. Noo test points or any modifications are made too the functionn logic. The proposedd scheme requires addingg only aa small amount of additionalhardwaretootheSTUMPSSarchitecture. Experimental results comparingg the proposedd approachh withh other approaches are presented.
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Hybrid BIST Based on Weighted Pseudo-Random Testing: A New Test Resource Partitioning Scheme
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