Process Variation Tolerant Online Current Monitor for Robust Systems

  • Authors:
  • Qikai Chen;Saibal Mukhopadhyay;Hamid Mahmoodi;Kaushik Roy

  • Affiliations:
  • Purdue University;Purdue University;Purdue University;Purdue University

  • Venue:
  • IOLTS '05 Proceedings of the 11th IEEE International On-Line Testing Symposium
  • Year:
  • 2005

Quantified Score

Hi-index 0.00

Visualization

Abstract

Large inter-die and intra-die process variations result in significant uncertainty in delay of circuits. Large delay variations may lead to parametric/functional failures. In this paper we propose a novelleakage-variation-tolerant online current monitor, namely leakage canceling current sensor, to detect completion of operations in logic blocks. The current monitor is applied to self-timed logic to design process variation tolerant circuits. It is observed that, for self-timed circuits, the probability of functional failures can be reduced by 50% with no performance degradation and with same power consumption.