Comparative analysis of yield optimized pulsed flip-flops

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• 作者：Marco Lanuzza ; Raffaele De Rose ; Fabio Frustaci ; Stefania Perri ; Pasquale Corsonello
• 刊名：Microelectronics Reliability
• 出版年：2012
• 出版时间：August, 2012
• 年：2012
• 卷：52
• 期：8
• 页码：1679-1689
• 全文大小：810 K

文摘

In this paper, the influence of random process variations on pulsed flip-flops is analyzed. Monte Carlo simulation results demonstrate that using transistor reordering and dual threshold voltage transistors timing, energy and energy-delay-product yields of more than 1.98, 1.62 and 1.99 times higher are obtained, without requiring architectural modifications and without increasing silicon area requirement. Several flip-flops optimized as described here are compared taking into account the effects due to random process variations and to environmental variations (caused by power supply voltage and temperature fluctuations). Obtained results show that among the compared circuits the Conditional Precharge Flip-Flop achieves the highest delay, energy and energy-delay-product yields.