TY - GEN
T1 - Adaptive minimum supply voltage for subthreshold circuits considering noise margin and PT variations
AU - Luo, Shien Chun
AU - Chiou, Lih Yih
PY - 2010
Y1 - 2010
N2 - The autonomous, energy-harvesting devices need to maintain tasks with power consumption as low as possible. Scaling down the digital supply voltage into subthreshold range is one of the effective schemes. However, the signal integrity, depending on hard-to-predict inter- and intra-die process variations, restricts the voltage scalability. The minimum supply voltage varies with processes and environments, and the predefined minimum operating voltage may cause functional errors. This work therefore proposes an adaptive formulation of the minimum supply voltage. Compared with previous works, the proposed formulation enhances the effectiveness by considering noise margin and process variations. The formulation also leads to the low-overhead implementation, enabling the run-time calculation in the power-constrained devices.
AB - The autonomous, energy-harvesting devices need to maintain tasks with power consumption as low as possible. Scaling down the digital supply voltage into subthreshold range is one of the effective schemes. However, the signal integrity, depending on hard-to-predict inter- and intra-die process variations, restricts the voltage scalability. The minimum supply voltage varies with processes and environments, and the predefined minimum operating voltage may cause functional errors. This work therefore proposes an adaptive formulation of the minimum supply voltage. Compared with previous works, the proposed formulation enhances the effectiveness by considering noise margin and process variations. The formulation also leads to the low-overhead implementation, enabling the run-time calculation in the power-constrained devices.
UR - http://www.scopus.com/inward/record.url?scp=77956566143&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77956566143&partnerID=8YFLogxK
U2 - 10.1109/ICGCS.2010.5543012
DO - 10.1109/ICGCS.2010.5543012
M3 - Conference contribution
AN - SCOPUS:77956566143
SN - 9781424468775
T3 - 1st International Conference on Green Circuits and Systems, ICGCS 2010
SP - 499
EP - 503
BT - 1st International Conference on Green Circuits and Systems, ICGCS 2010
T2 - 1st International Conference on Green Circuits and Systems, ICGCS 2010
Y2 - 21 June 2010 through 23 June 2010
ER -