A concurrent error detection based fault-tolerant 32 nm XOR-XNOR circuit implementation

Mouna Karmani*, Chiraz Khedhiri, Belgacem Hamdi, Ka Lok Man, Eng Gee Lim, Chi Un Lei

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

1 Citation (Scopus)


As modern processors and semiconductor circuits move into 32 nm technologies and below, designers face the major problem of process variations. This problem makes designing VLSI circuits harder and harder, affects the circuit performance and introduces faults that can cause critical failures. Therefore, fault-tolerant design is required to obtain the necessary level of reliability and availability especially for safety-critical systems. Since XOR-XNOR circuits are basic building blocks in various digital and mixed systems, especially in arithmetic circuits, these gates should be designed such that they indicate any malfunction during normal operation. In fact, this property of verifying the results delivered by a circuit during its normal operation is called Concurrent Error Detection (CED). In this paper, we propose a CED based fault- tolerant XOR-XNOR circuit implementation. The proposed design is performed using the 32 nm process technology.

Original languageEnglish
Title of host publicationInternational MultiConference of Engineers and Computer Scientists, IMECS 2012
PublisherNewswood Limited
Number of pages4
ISBN (Print)9789881925190
Publication statusPublished - 2012
Event2012 International MultiConference of Engineers and Computer Scientists, IMECS 2012 - Kowloon, Hong Kong
Duration: 14 Mar 201216 Mar 2012

Publication series

NameLecture Notes in Engineering and Computer Science
ISSN (Print)2078-0958


Conference2012 International MultiConference of Engineers and Computer Scientists, IMECS 2012
Country/TerritoryHong Kong


  • Concurrent Error Detection (CED)
  • Fault-tolerant systems
  • Stuck-at fault model
  • Transistor stuck-on fault model
  • Transistor stuck-open fault model
  • XOR-XNOR circuit

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