fREEDA: An Open Source Circuit Simulator

Steer, M.B.; Kriplani, Nikhil M.; Luniya, Sonali R.; Hart, F.P.; Lowry, J.; Christoffersen, C.E.

doi:10.1109/inmmic.2006.283523

Cited by 2 publications

(5 citation statements)

References 2 publications

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“…Two physically based models of a molecular component were developed and implemented in the general purpose circuit simulator fREEDA TM [20]. Of these, Model #1 was shown to be very useful in that it can be used as a functional form to interpolate experimental data; however it was found to be insufficiently robust to describe more complicated processes using physically meaningful parameters.…”

Section: Discussionmentioning

confidence: 99%

“…Herein we determine a basic approach to underlie models of this type for arbitrary molecular devices and model a simple two-terminal molecular-wire type component. The molecular component model developed is implemented in the circuit simulator fREEDA TM [20]. This simulator uses a universal modelling technology and object-oriented programming principles that enable the same piece of computer code to be used with any analysis type.…”

Section: Introductionmentioning

confidence: 99%

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Physically based molecular device model in a transient circuit simulator

Kriplani¹,

Nackashi²,

Amsinck³

et al. 2006

Chemical Physics

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physically based molecular device model in a transient circuit simulator

Kriplani¹,

Nackashi²,

Amsinck³

et al. 2006

Chemical Physics

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“…The bulk referenced drain, gate and source voltages of each transistor are represented in terms of state variables given in (8). The PMOS voltages are given by (9) assuming source and bulk are at same potential.…”

Section: -Input Nand Macromodelmentioning

confidence: 99%

“…Electro-thermal extension of these macromodels can be very useful for fast dynamic electrothermal simulation of VL SI circuits. The macromodels are implemented in the multi physics circuit simulator tREEDA [8].…”

Section: Introductionmentioning

confidence: 99%

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Fast dynamic simulation of VLSI circuits using reduced order compact macromodel of standard cells

Priyadarshi

Kriplani

Steer

et al. 2010

2010 IEEE International Behavioral Modeling and Simulation Workshop

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This paper presents a dynamic simulation methodology using a reduced order compact macromodel of standard cells. The standard cell macromodels are formulated with a smaller number of state variables compared to an equivalent transistor-level implementation. This results in significant speed-ups over transistor-level simulation for large scale circuits. Such reduction in state variables also reduces memory usage. The macromodels are based on transistor equations, and simulation using these models produces results in excellent agreement (delay errors below 1 %) with transistor-level simulation results. Various examples showing 1.5x-lOOx reduction in dynamic simulation time and 1.5x-2.8x reduction in memory usage are presented. INTRODUCTIONWith continuous technology scaling and increasing demand for more functionality per chip, the number of transistors per chip is increasing. This is making transistor-level simulation of VL SI circuits challenging because of increased simulation runtimes and memory requirements. Given that the transistor-level simulation is capable of producing the most accurate results, in order to alleviate the computational and memory burden of a full-chip simulation of today ' s VLSI circuits, a simulation methodology is required which can produce sufficiently accurate results while significantly lowering computational and storage cost compared to transistor-level simulation.

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fREEDA: An Open Source Circuit Simulator

Cited by 2 publications

References 2 publications

Physically based molecular device model in a transient circuit simulator

Physically based molecular device model in a transient circuit simulator

Fast dynamic simulation of VLSI circuits using reduced order compact macromodel of standard cells

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