Dual-Edge Triggered T Flip-Flop Structure Using Quantum-Dot Cellular Automata

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Abstract:

As an emerging nanotechnology, quantum-dot cellular automata (QCA) has the potential to be used for next generation VLSI. Various designs of combinational logic circuits have been proposed for QCA implementation, but sequential circuit design is limited due to the lack of high-performance QCA flip-flops. After an introduction on QCA and dual-edge triggered (DET) flip-flops, a new QCA DET T flip-flop following a pulsed latch scheme is presented. The proposed T flip-flop is simulated using QCADesigner simulator and its logic functionality is verified. The same data throughput of the DET flip-flop can be achieved while operating at half the clock frequency of a single-edge triggered (SET) counterpart. The proposed flip-flop is promising in building QCA sequential circuits with low power and high performance.

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February 2013

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[1] C. S. Lent, P. D. Tougaw and W. Porod: Bistable saturation in coupled quantum dots for quantum cellular automata. Applied Physics Letters, Vol. 62(1993), pp.714-716.

DOI: 10.1063/1.108848

Google Scholar

[2] C. S. Lent, P. D. Tougaw and W. Porod: Quantum cellular automata: the physics of computing with arrays of quantum dot molecules. In: Proc. Workshop on Physics and Computing, Dallas, USA (1994), pp.5-13.

DOI: 10.1109/phycmp.1994.363705

Google Scholar

[3] A. I. Orlov, A.O. Toth and G. Bernstein, G.H., Lent, C.S., Snider, G.L.: Digital logic gate using quantum-dot cellular automata. Science, Vol. 284(1999), p.289–291.

DOI: 10.1126/science.284.5412.289

Google Scholar

[4] K. M. Qiu and Y.S. Xia: Quantum-dots cellular automata comparator. in: The 7th International Conference on ASIC. Guilin, China, Vol. 2 (2007)., pp.1297-1300.

DOI: 10.1109/icasic.2007.4415874

Google Scholar

[5] H. Cho and E.E. Swartzlander: Adder and Multiplier Design in Quantum-Dot Cellular Automata. IEEE Transactions on Computers, Vol. 58 (2009), pp.721-727.

DOI: 10.1109/tc.2009.21

Google Scholar

[6] Mardiris, V.A., Karafyllidis, I.G.: Design and simulation of modular 2n to 1 quantum-dot cellular automata (QCA) multiplexers. International Journal of Circuit Theory and Applications, Vol. 38(2010), p.771–785.

DOI: 10.1002/cta.595

Google Scholar

[7] Huang, J., Momenzadeh, M., Lombardi, F.: Design of sequential circuits by Quantum-dot Cellular Automata, Microelectronics Journal, Vol. 38(2007), pp.525-537.

DOI: 10.1016/j.mejo.2007.03.013

Google Scholar

[8] Abdollahian, D.M., Shahini, S.A., Shahgholi, G.B., Vafaei, A.: Novel RAM cell designs based on inherent capabilities of quantum-dot cellular automata. Microelectronics Journal, Vol. 42(2011. ), pp.701-708.

DOI: 10.1016/j.mejo.2011.02.006

Google Scholar

[9] Askari, M., Taghizadeh, M., Fardad, K.: Design and analysis of a sequential ring counter for QCA implementation. in: International Conference on Computer and Communication Engineering. Kuala Lumpur, Malaysia, (2008), pp.933-936.

DOI: 10.1109/iccce.2008.4580743

Google Scholar

[10] Shamsabadi, A.S., Ghahfarokhi, B.S., Zamanifar, K., Movahedinia, N.: Applying inherent capabilities of quantum-dot cellular automata to design: D flip-flop case study, Journal of Systems Architecture, Vol. 55(2009), p.180–187.

DOI: 10.1016/j.sysarc.2008.11.001

Google Scholar

[11] Yang, X., Cai, L., Zhao X., Zhang, N.,. Design and simulation of sequential circuits in quantum-dot cellular automata: Falling edge-triggered flip-flop and counter study. Microelectronics Journal, Vol. 41(2010a), p.56–63.

DOI: 10.1016/j.mejo.2009.12.008

Google Scholar

[12] Torabi, M.: A new architecture for T flip flop using quantum-dot cellular automata. in: 3rd Asia Symposium on Quality Electronic Design, (2011). pp.296-300.

DOI: 10.1109/asqed.2011.6111764

Google Scholar

[13] Yang, X.; Cai, L.; Zhao, X.: Low power dual-edge triggered flip-flop structure in quantum dot cellular automata. Electronics Letters, Vol. 46(2010b), p.825–826.

DOI: 10.1049/el.2010.1090

Google Scholar

[14] L.R. Xiao, X. X. Chen, S. Y. Ying: Design of dual-edge triggered flip-flops based on quantum-dot cellular automata[J]. Journal of Zhejiang University Science C, Vol. 13(2012), pp.385-392.

DOI: 10.1631/jzus.c1100287

Google Scholar

[15] Blair, G.M.,: Low-power double-edge triggered flipflop. Electron Letters, Vol. 33(1997), pp.845-847.

DOI: 10.1049/el:19970593

Google Scholar

[16] X. W. Wu, J. Wei: CMOS edge-triggered flip-flop using one latch. Electrons Letters, Vol. 34 (1998), pp.1581-1582.

DOI: 10.1049/el:19981095

Google Scholar

[17] Walus, K., Dysart, T.J., Jullien, G.A., Budiman, A.R.: QCADesigner: a rapid design and simulation tool for quantum-dot cellular automata. IEEE Transactions on Nanotechnology, Vol. 3(, 2004), p.26–31.

DOI: 10.1109/tnano.2003.820815

Google Scholar