A FAULT MODEL FOR MULTIPLE-VALUED PLAS AND ITS EQUIVALENCES

In this paper, a fault model for multiple-valued programmable logic ar rays (MV-PLAs) is proposed and the equivalences of faults of MV-PLA's are discussed. In a supposed multiple-valued NOR/TSUM PLA model, it is shown that multiple-valued stuck-at faults, multiple-valued bridging faults, multiple-valued threshold shift faults and other some faults i n a literal generator circuit are equivalent or subequivalent to a mul tiple crosspoint fault in the NOR plane or a multiple fault of weights in the TSUM plane. These results lead the fact that multiple-valued t est vector set which indicates all multiple cross-point fault and all multiple fault of weights also detects above equivalent or subequivale nt faults in a MV-PLA.