Pulsed-Latch Replacement Using Concurrent Time Borrowing and Clock Gating

Abstract

Flip-flops are the most common form of sequencing elements; however, they have a significantly higher sequencing overhead than latches in terms of delay, power, and area. Hence, pulsed latches are a promising option to reduce power for high-performance circuits. In this paper, to save power and compensate for timing violations, we fully utilize the intrinsic time borrowing property of pulsed latches and consider clock gating during pulsed-latch replacement. Experimental results show that our approach can generate very power efficient results.