An energy-efficient RAM cell based on novel majority gate in QCA technology

Majeed, Ali H.; Alkaldy, Esam; Albermany, Salah

doi:10.1007/s42452-019-1330-6

Cited by 25 publications

(18 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Even though many memory designs have been proposed [28], [29], [30], [31], [32], [33], [34] the majority of them are not compatible with our targeted crossbar architecture. Thus, for the extension of the circuit design methodology to sequential logic we make use of the QCA memory cell presented in [19], which combines the basic advantages of the QCA technology with the capabilities of the programmable crossbar architecture.…”

Section: Automatic Qca Layout Generationmentioning

confidence: 99%

Methodology for Automated Design of Quantum-Dot Cellular Automata Circuits

Liolis

Mardiris

Karafyllidis

et al. 2023

IEEE Open J. Nanotechnol.

View full text Add to dashboard Cite

Quantum-dot Cellular Automata (QCA) provide very high scale integration potential, very high switching frequency, and have extremely low power demands, which make the QCA technology quite attractive for the design and implementation of large-scale, high-performance nanoelectronic circuits. However, state-of-the-art QCA circuit designs were not derived by following a set of universal design rules, as is the case of CMOS circuits, and, as a result, it is either impossible or very difficult to combine QCA circuit blocks in effective large-scale circuits. In this paper, we introduce a novel automated design methodology, which builds upon a QCA specific universal design rules set. The proposed methodology assumes the availability of a generic QCA crossbar architecture and provides the means to customize it in order to implement any given logic function. The programming principles and the flow of the proposed automated design tool for crossbar QCA circuits are described analytically and we apply the proposed automated design method for the design of both combinatorial and sequential circuits. The obtained designs demonstrate that the proposed method is functional, easy to use, and provides the desired QCA circuit design unification.

show abstract

Section: Automatic Qca Layout Generationmentioning

confidence: 99%

Methodology for Automated Design of Quantum-Dot Cellular Automata Circuits

Liolis

Mardiris

Karafyllidis

et al. 2023

IEEE Open J. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…It is worth mentioning that AND and OR gates may be made by setting one of the inputs to "0" or "1." 29 In Reference 30, there were circuits designed for a single-layer QCA full adder, full subtractor, 4-bit ripple carry adder, and 4-bit ripple borrow subtractor. 31 Furthermore, these ideas competed with available multilayer layouts, and in certain circumstances, outperformed them.…”

Section: Background and Related Workmentioning

confidence: 99%

“…It is worth mentioning that AND and OR gates may be made by setting one of the inputs to “0” or “1.” 29 …”

Section: Background and Related Workmentioning

confidence: 99%

A new applicable and multilayer design of nanoscale adder–subtractor using quantum‐dots

Gao

Mohammed

2022

Concurrency and Computation

View full text Add to dashboard Cite

Quantum-dot cellular automata (QCA) is a technique that can substitute silicon transistors. Besides, the computational architecture and systems are focused on nanoscale QCA in response to industry demands for energy-efficient and high-performance computing systems. Because of the importance of adder/subtractor designs in logical circuits, a novel QCA-based adder/subtractor design is suggested in this study. A full adder is developed first, followed by a full subtractor. These QCA-based adder/subtractor designs are simple, ultra-efficient, constructive, and have easy input and output access.To create the required output, these circuits make use of quantum technology's intrinsic features. The QCADesigner program is used to assess the simulation findings of the recommended designs. Additionally, these designs are investigated in terms of complexity, clocking, cells, and latency. It shows that the recommended design is more efficient than standard designs regarding the area, cell count, and cost. These circuits are among the circuits in which easy access to inputs and outputs is provided, and their connection to other circuits makes them more practical. In addition to the above, the low number of cells, high speed, and easy implementation are among the innovations of the presented circuits. K E Y W O R D Sfull-adder, QCA, QCADesigner, quantum-dot cellular automata, subtractor INTRODUCTIONCMOS circuits may be made in a small amount of time, leading designers to look into it as a business strategy. 1 Documentation of leakage current and high-power usage in CMOS devices has surfaced in past years. As a result, the CMOS technological revolution must occur. Moore's law is followed by CMOS technology, which is based on today's conventional transistors. 2 Enhancing the transistors in a chip in CMOS technology is undesirable. However, since micro and nano-structures have gotten much attention recently, 3 a strategy at the nanoscale can demonstrate the ability to change Moore's law. That strategy is quantum-dot cellular automata (QCA) technology, which broke Moore's law by rapidly substituting innovative technology with CMOS. [4][5][6] In the QCA technology, several studies are conducted on the layout of different digital circuits like basic logic gates, 7 adders, 8,9 encoders, 10 subtractors, 11-13 multiplexers, 14-17 dividers, 18,19 and memory circuits. 20,21 Meanwhile, adders and subtractors hold a unique place in digital systems because they significantly influence their performance. 22,23 It is worth noting that developers strive to research a wide range of challenges, including complexity and limited occupancy space. However, owing to the novelty of this technology, there are still several significant hurdles that have yet to be overcome. 24

show abstract

“…Also, a new layout for a 5-input single layer majority gate was offered by Majeed, AlKaldy and Albermany. 18 The proposed majority gate can implement a low-power RAM cell with the set/ reset feature. The QCADesigner tool was also employed for design verification, while the QCAPro tool was employed for power analysis.…”

Section: Principles Faults and Fault-tolerant Circuitsmentioning

confidence: 99%

A New Nano-Design of a Fault-Tolerant Coplanar RAM with Set/Reset Ability Based on Quantum-Dots

Wei¹,

Guo²

2022

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

Quantum Dot Cellular Automata (QCA) is a recent technology that has piqued researchers’ interest because of its small size and low energy consumption. With the help of quantum dots, the QCA technology delivers a new computational foundation for constructing digital circuits. Medical imaging and quantum computing are just a few applications for quantum dots. Quantum dots are nanocrystals that transmit data at the nano-scale. Since the memory is an important digital circuit, this work proposes a fault-tolerant loop-based coplanar Random Access Memory (RAM) with set/reset capability that uses the QCA rules. The memory cell’s operation is verified both physically and through simulations with the QCADesigner program. The quantum cost of the proposed memory cell shows that it has a negligible quantum cost. The proposed QCA-based memory circuit performs well in simulations, with 96 QCA cells and the output signal generated after 0.75 clock phases. The gates and wire in this design have around 85 percent better fault-tolerant capability than the best-presented memory systems. Furthermore, this circuit can tolerate most cell omission, displacement, misalignment, and deposition faults. This structure can be used to create high-performance higher-order fault-tolerant memory structures.

show abstract

An energy-efficient RAM cell based on novel majority gate in QCA technology

Cited by 25 publications

References 26 publications

Methodology for Automated Design of Quantum-Dot Cellular Automata Circuits

Methodology for Automated Design of Quantum-Dot Cellular Automata Circuits

A new applicable and multilayer design of nanoscale adder–subtractor using quantum‐dots

A New Nano-Design of a Fault-Tolerant Coplanar RAM with Set/Reset Ability Based on Quantum-Dots

Contact Info

Product

Resources

About