TY - GEN
T1 - Circuit aging prediction for low-power operation
AU - Zheng, Rui
AU - Velamala, Jyothi
AU - Reddy, Vijay
AU - Balakrishnan, Varsha
AU - Mintarno, Evelyn
AU - Mitra, Subhasish
AU - Krishnan, Srikanth
AU - Cao, Yu
PY - 2009/12/1
Y1 - 2009/12/1
N2 - Low-power circuit operations, such as dynamic voltage scaling and the sleep mode, pose a unique challenge to aging prediction. Traditional aging models assume constant voltage and averaged activity factor, ignoring the impact of the long sleep period, and thus, result in a significant overestimation of the degradation rate. To accurately predict the aging effect in low-power design, this work first examines critical model assumptions in the reaction-diffusion process that is responsible for the NBTI effect. By using the correct diffusion profile, it then proposes a new aging model that effectively analyzes the degradation under various low-power operations. The new model well predicts the aging behavior of scaled CMOS measurement data (45nm and 65nm) with different operation patterns, especially sleep mode operation and dynamic voltage scaling. Compared to previous aging models, the new result captures the essential role of the long recovery phase in circuit aging, reducing unnecessary guardbanding in reliability protection.
AB - Low-power circuit operations, such as dynamic voltage scaling and the sleep mode, pose a unique challenge to aging prediction. Traditional aging models assume constant voltage and averaged activity factor, ignoring the impact of the long sleep period, and thus, result in a significant overestimation of the degradation rate. To accurately predict the aging effect in low-power design, this work first examines critical model assumptions in the reaction-diffusion process that is responsible for the NBTI effect. By using the correct diffusion profile, it then proposes a new aging model that effectively analyzes the degradation under various low-power operations. The new model well predicts the aging behavior of scaled CMOS measurement data (45nm and 65nm) with different operation patterns, especially sleep mode operation and dynamic voltage scaling. Compared to previous aging models, the new result captures the essential role of the long recovery phase in circuit aging, reducing unnecessary guardbanding in reliability protection.
UR - http://www.scopus.com/inward/record.url?scp=74049160392&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=74049160392&partnerID=8YFLogxK
U2 - 10.1109/CICC.2009.5280814
DO - 10.1109/CICC.2009.5280814
M3 - Conference contribution
AN - SCOPUS:74049160392
SN - 9781424440726
T3 - Proceedings of the Custom Integrated Circuits Conference
SP - 427
EP - 430
BT - 2009 IEEE Custom Integrated Circuits Conference, CICC '09
T2 - 2009 IEEE Custom Integrated Circuits Conference, CICC '09
Y2 - 13 September 2009 through 16 September 2009
ER -