Flash chips inhabit the core of every memory-dependent gadget today, right from the iconic iPhone to Nintendo Wii. Widespread usage of this technology has rendered it indispensable, thus triggering frenzied research to make it more powerful, resilient, durable and small. And, in a revolutionary finding, Japanese scientists have taken another giant leap in its development. A flash chip with an estimated lifetime of a million years has been developed in an attempt to phase out the existing chips, which last for just 10 years or so. Scientists from the National Institute of Advanced Industrial Science and Technology and the University of Tokyo also claim that these chips consume significantly less power (around 6 volts) than their predecessors (approx. 20 volts).
Typically, flash chips wear out during the process of writing and rewriting data for applications. This process makes them ineffective after around 10,000 rewrites. Moreover, constant miniaturization (which seems to be the existing trend) tends to reduce the lifetime of a chip. A combination of these factors makes them unusable at sub 20nm circuit sizes. On the other hand, the ferroelectric flash chip developed by the Japanese scientists offers scalability up to 10nm and a rewrite feasibility of up to 100 million times. And a unique ‘wear-leveling’ process ensures that all the cells are subject to equal wear. Consequently, the chip functions for a longer time.
