Current Sensing Completion Detection in deep sub-micron technologies

Current Sensing Completion Detection (CSCD) method in asynchronous circuits is addressed. Current Sensing represents a simple but effective and reliable approach to detect completion of computation in asynchronous (self-timed) systems. However, in recent deep sub-micron technologies, several challenges, such as significant influence of process variations, leakage current power dissipation with circuit in off-state, etc., have to be faced. This paper presents an overview of these undesired effects and proposes some prospective solutions.