Scientists from the National Institute of Advanced Industrial Science and Technology and the University of Tokyo have developed a new type of flash memory chip that has a life span of hundreds of years.
Currently flash chips only last a decade at the most, however practically speaking, they can worn out in a few years due to repeated reading and writing.
The new ferroelectric Nand Flash memory chip works at lower voltages than conventional chips thus saving power.
The conventional flash memory chip has certain drawbacks like it cannot be used for circuit sizes below 20 nanometres because continuing miniaturisation reduces its life. Also it has finite number of erase-write cycles of 100,000.
The new chip can be scaled down to at least 10 nanometres and the next generation of conventional flash cells will use a 30 nanometre circuit density.
It can be rewritten more than 100 million times, compared to a conventional chip lifetime of around 100,000. It uses a rewriting voltage of fewer than six volts to prolong its life, compared to about 20 volts for conventional chips.
Flash memory is non-volatile computer memory that can be electrically erased and reprogrammed. It is a technology that is primarily used in memory cards and USB flash drives for general storage and transfer of data between computers and other digital products.
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