Using multi-threshold threshold gates in RTD-based logic design: A case study

Pettenghi, H.; Avedillo, M.J.; Quintana, J. M.

doi:10.1016/j.mejo.2007.05.015

Cited by 27 publications

(16 citation statements)

References 11 publications

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“…The research has been done is very little on Threshold logic [13]. Recently, a synthesis tool has been proposed in [14], but it mostly treats Threshold Logic Gates (TLG) as conventional BL gates and the particularities of TL gates are almost completely ignored during the synthesis process.…”

Section: Threshold Logicmentioning

confidence: 99%

A XOR Threshold Logic Implementation Through Resonant Tunneling Diode

Dixit¹

2012

VLSICS

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Section: Threshold Logicmentioning

confidence: 99%

A XOR Threshold Logic Implementation Through Resonant Tunneling Diode

Dixit¹

2012

VLSICS

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“…4(a). This alternative implementation can achieve smaller circuit area and consume less power [36]. The RTD-based circuits proposed in this paper are designed with this improved topology.…”

Section: B Tg and Mttgmentioning

confidence: 99%

“…The programmable gates and MUX that we have designed are based on the improved MTTG topology discussed in Section II-B, while BUF is implemented by using a basic RTDbased TG [36]. The gate implementations are illustrated in Fig.…”

Section: Table I Logic Functions Of Programmable and Primitive Gatesmentioning

confidence: 99%

Complete Logic Functionality of Reconfigurable RTD Circuit Elements

Zheng

Huang

2009

IEEE Trans. Nanotechnology

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Innovative nanoscale devices have been developed to enhance future circuit design to overcome physical barriers hindering the CMOS technology. Among the emerging nanodevices, resonant tunneling diodes (RTDs) have demonstrated promising electronic features due to their high-speed switching capability and functional versatility. Great circuit functionality can be achieved through integrating heterostructure FETs (HFETs) in conjunction with RTDs to modulate effective negative differential resistance. In this paper, we propose novel programmable logic elements (PLEs) implemented in threshold gates (TGs) and multithreshold TGs by exploring RTD/HFET monostable-bistable transition logic element (MOBILE) principles. Our three-input PLE can be configured through five binary control bits to realize all the three-variable logic functions, which is, to the best of our knowledge, the first single RTD-based structure that provides complete Boolean logic implementation. It is also a more efficient reconfigurable circuit element than a general lookup table that requires eight configuration bits for three-variable functions. We further extend the design concept to construct a more versatile four-input PLE. A comprehensive comparison of three-and four-input PLEs provides an insightful view of design tradeoffs between performance and area. We present the mathematical proof of PLE's logic completeness based on Shannon expansion, as well as the HSPICE simulation results of the programmable and primitive RTD/HFET gates that we have designed.An efficient control bit generating algorithm is developed by using a special encoding scheme to implement any given logic function. Based on our PLE structures, we propose a reconfigurable architecture, namely MORE, which offers dynamic reconfigurability without incurring latency overheads, due to the intrinsic self-latching property of MOBILE circuits. An efficient reconfiguration data generation algorithm is also built to take full advantage of our MORE architecture. The experimental results indicate that it can help reduce the reconfiguration cost by 37% on average.

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“…2(a). This alternative implementation can achieve a smaller circuit area and consume less power [21]. The RTD-based circuits proposed in this paper use this improved circuit topology.…”

Section: A Monostable-bistable Transition Logic Elementmentioning

confidence: 99%

Reconfigurable RTD-based circuit elements of complete logic functionality

Zheng¹,

Huang²

2008

2008 Asia and South Pacific Design Automation Conference

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Resonant tunneling diodes (RTDs) have demonstrated promising circuit characteristics of high speed switching property and versatile functionality with negative differential resistance (NDR). In this paper, we propose novel programmable logic elements (PLEs) that can be configured to realize all three-or four-input logic functions. These simple RTD-based circuit elements are implemented with threshold gates (TGs) and multi-threshold threshold gates (MTTGs) by employing programmable monostable-bistable logic element (MOBILE) principles. We also developed a dynamically reconfigurable scheme based on our PLE structures which facilitate nanopipelining without incurring delay overheads.

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Using multi-threshold threshold gates in RTD-based logic design: A case study

Cited by 27 publications

References 11 publications

A XOR Threshold Logic Implementation Through Resonant Tunneling Diode

A XOR Threshold Logic Implementation Through Resonant Tunneling Diode

Complete Logic Functionality of Reconfigurable RTD Circuit Elements

Reconfigurable RTD-based circuit elements of complete logic functionality

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