“Aging-aware reliable multiplier design with Adaptive Hold Logic”

Abstract: High speed and low power consumption is one of the most important design objectives in integrated circuits. Digital multipliers are most critical functional units. The overall performance of this system depends on the throughput of multiplier design. Aging problem of transistors has a significant effect on performance of these systems and in long term, the system may fail due to timing violations. Aging effect can be reduced by using over-design approaches, but these leads to area, power inefficiency. Hence to reduce the maximum power consumption and delay, variable latency multiplier with adaptive hold logic is used. The multiplier is able to provide higher throughput through the variable latency and can adjust the AHL circuit to mitigate performance degradation that is due to the aging effect. The proposed architecture can be applied to image multiplication. Based on the idea of razor flip flop and adaptive hold logic the timing violations are reduced. In the fixed latency usage of clock cycles is increased. The re-execution of clock cycles is reduced by using variable latency.

Keywords: Adaptive Hold Logic (AHL), Negative Bias Temperature Instability (NBTI), Positive Bias Temperature Instability (PBTI), reliable multiplier, variable latency.