A new fault injection method for evaluation of combining SEU and SET effects on circuit reliability

Wu, Ke‐Jun; Pahlevanzadeh, Hoda; Liu, Peng; Yu, Qiaoyan

doi:10.1109/iscas.2014.6865207

Cited by 4 publications

(1 citation statement)

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“…For the number of faults, [8] indicates that SEU is the most frequent fault, and single event multiple upset (SEMU) with up to three bits is dominant in modern integrated circuits [27]. To compute the fault rate of an FSM, it is operated for 1024 clock cycles and random faults using either stuck-at-zero or stuck-at-one models are inserted for one clock cycle [25,28]. Figure 8 shows the failure rate of the proposed method, in which a failure in FSM counts when either the output or the current state of normal operation without faults is different from that of a faulty operation.…”

Section: Resultsmentioning

confidence: 99%

Area-Efficient Differential Fault Tolerance Encoding for Finite State Machines

Park

Yoo

2020

Electronics

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A differential fault tolerance encoding is presented for finite state machines (FSMs) to improve their area efficiency. As the manufacturing technology for semiconductors continues to scale down, the probability of the occurrence of unexpected faults in integrated circuits has been increasing. Because an FSM controls an entire digital circuit, the faults in FSMs should be carefully addressed. Whereas the previous encoding applies a fault tolerance scheme to all the states in an FSM, the proposed encoding applies a fault tolerance scheme to only specific states depending on their importance. Compared with the previous complete fault tolerance encoding, the proposed encoding provides a comparable failure probability with a small hardware by applying the fault tolerance scheme differently to each state. The proposed method improves the area efficiency by 36.1%, 43.8%, 49.2%, and 74.6% compared with that by the non-fault tolerance, previous hardware redundancy, information redundancy, and time redundancy methods, respectively. Consequently, the proposed method can provide a flexible solution by applying the fault tolerance differently depending on the importance of the states.

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