1 research outputs found
High-Precision Tuning of State for Memristive Devices by Adaptable Variation-Tolerant Algorithm
Using memristive properties common for the titanium dioxide thin film
devices, we designed a simple write algorithm to tune device conductance at a
specific bias point to 1% relative accuracy (which is roughly equivalent to
7-bit precision) within its dynamic range even in the presence of large
variations in switching behavior. The high precision state is nonvolatile and
the results are likely to be sustained for nanoscale memristive devices because
of the inherent filamentary nature of the resistive switching. The proposed
functionality of memristive devices is especially attractive for analog
computing with low precision data. As one representative example we demonstrate
hybrid circuitry consisting of CMOS summing amplifier and two memristive
devices to perform analog multiply and accumulate computation, which is a
typical bottleneck operation in information processing.Comment: 20 pages, 6 figure