TY - GEN
T1 - An improved model for delay/energy estimation in near-threshold flip-flops
AU - Fisher, Sagi
AU - Dagan, Raz
AU - Blonder, Sagi
AU - Fish, Alexander
PY - 2011/8/2
Y1 - 2011/8/2
N2 - Near-threshold (NT) FFs, which operate from a supply voltage close to the transistor threshold voltage, are considered as a good alternative for portable applications, where low power dissipation with reasonable performance is the main demand. This paper presents an improved model for delay/energy estimation of the NT FFs. The proposed model, based on the EKV current and alpha power law models, improves the existing model by taking into account the rise and fall times of all internal nodes of the FF. The fitting parameters that are required for the model development were extracted from measurements of a test chip that was fabricated in a standard CMOS low power 80nm process. We show how the proposed model can be utilized for NT Master-Slave FF delay and energy estimation, showing an improvement of up to x100 in the precision of calculations compared to the existing model.
AB - Near-threshold (NT) FFs, which operate from a supply voltage close to the transistor threshold voltage, are considered as a good alternative for portable applications, where low power dissipation with reasonable performance is the main demand. This paper presents an improved model for delay/energy estimation of the NT FFs. The proposed model, based on the EKV current and alpha power law models, improves the existing model by taking into account the rise and fall times of all internal nodes of the FF. The fitting parameters that are required for the model development were extracted from measurements of a test chip that was fabricated in a standard CMOS low power 80nm process. We show how the proposed model can be utilized for NT Master-Slave FF delay and energy estimation, showing an improvement of up to x100 in the precision of calculations compared to the existing model.
UR - http://www.scopus.com/inward/record.url?scp=79960867631&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/iscas.2011.5937753
DO - https://doi.org/10.1109/iscas.2011.5937753
M3 - منشور من مؤتمر
SN - 9781424494736
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1065
EP - 1068
BT - 2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
T2 - 2011 IEEE International Symposium of Circuits and Systems, ISCAS 2011
Y2 - 15 May 2011 through 18 May 2011
ER -