"Memristors can be used in memory levels different than the standard non-volatile memory (i.e., different than secondary storage and code storage). Additionally, many types of memristors can be fabricated between two layers of metal and can therefore be fabricated in back-end-of-the-line of any conventional CMOS process, including stacking them in multiple vertical layers. Fabricating such a tight integration, where memristors are located on-top of CMOS transistors enables extremely high dense memory with low access latency."
Can anyone interpret the quoted text into simple terms? Why can't memristors replace conventional tranzistors in computer memories?
Dear George,
welcome, Adding to Aparana,
Memristor as memory resistor is a resitive device that remember the state of its resistance so long as no voltage applied on its terminals. So, it is basically an analog memory device. It can be made to store two states the zero state and the one state. So it can be written and erased by a positive voltage and a negative voltage. As a memory cell it holds its state without any power supply, so it is suitable as a flash memory.
It is so that an electronic memory is not only a memory cell. A memory cell must be addressed, written and read. So, any memory cell needs control circuit for its operation which are transistors. I think this is the cause of not introducing the memristors in the commertial memory circuits till now. It may not be able to compete with the s-ram till now.
You can get more information by following the link:Technical Report Memristor Technology and Applications:An Overview
Best wishes
I would argue that the technology is not 100% mature yet. There are issues with process variation, sensing circuitry for crossbars, etc. From an article I read: " ReRAM has proven to be far more difficult to develop than anyone initially expected. Moreover, NAND has scaled farther than previously thought, causing many to delay or scrap their efforts in ReRAM. "
At the moment is not applicable because difficult to manufacture. However electronic history teachs that whatever was difficult 20 years ago now largely available.
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