AHMOSE: Towards a Circuit Level Solution for Process Variability

Asynchronous circuits are increasingly proposed as an efficient circuit-level solution for Process Variability. Asynchronous circuits are self timed, which gives them the opportunity to be immune against all variability sources including process-variability. Moreover, asynchronous circuits gain interesting properties due to variability in terms of performance and power-consumption distribution. However, there is a lack of asynchronous design tools which are variability aware. AHMOSE project (Asynchronous High-speed Modeling and Optimization tool Set) provides a tool set which is able to consider variability due to process, voltage and temperature “PVT”. Based on a new modeling methodology, some algorithms and tools are developed to analyze and optimize asynchronous circuits while considering variability in different system components. The proposed methods and tools show high efficiency in terms of computation time, high accuracy in implementing different variability sources and high flexibility in mixing static and time-variable delay models.