Testing On-Die Process Variation in Nanometer VLSI
IEEE Design & Test
System-on-Chip Test Architectures: Nanometer Design for Testability
System-on-Chip Test Architectures: Nanometer Design for Testability
Reducing functional unit power consumption and its variation using leakage sensors
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
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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.