Resistive RAM Functionality Depends on Memristor (A Solid Dielectric Material)

Resistive RAM (Random Access Memory) is a form of non-volatile RAM that functions by changing the resistance of a solid dielectric material called memristor. A memristor is an electrical device whose resistance depends on the flux of electric charge through the device whereas a resistive RAM is a device that exhibits memristive behavior and is a special type of memristor. Scalability, high capacity, operation on low voltage, high performance and reliable memory are some of the unique characteristics of a resistive RAM that enables its use in embedded and SSD applications. Also, it requires low programming currents than PCM (Phase Change Memory) with a comparable performance with respect to retention and endurance. Computers that use DRAM (Dynamic Random Access Memory) to run programs temporarily store data that is required by the system. The contents of DRAM are immediately lost once the power supply goes off, but with resistive RAM, it is possible to resume a computing session without loss of any data. A typical resistive RAM cell possesses a switching material with different resistance characteristics. This switching material is sandwiched by two metallic electrodes. The switching effect is based on the motion of ions under the influence of an electric field and the ability of switching material to store the ion distribution that causes a notable change in the resistance of device.

Resistive RAMs are implemented in smart phones to increase their storage capacities. By using porous silicon oxide, these resistive RAM modules are manufactured at room temperatures by standard production techniques. These techniques are cheaper and also produce higher yields as compared to the production processes used for the manufacture of other forms of nonvolatile memories. Also, there is less wastage of silicon. Another application of resistive RAM is in the field of industrial processes. Due to the mass storage feature, mixed workload applications like databases and virtualized environments are perfectly suited for implementing resistive RAMs. Other applications include in smartcards for carrying out tasks like data storage and application processing. In enterprises, a huge amount of data needs to be stored and accessed at low power and compact space. Enterprises find it extremely challenging in managing data using conventional disk drive technologies. In such cases, resistive RAMs prove to be very efficient and convenient way of managing data.

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Resistive RAM is an emerging memory technology that has been introduced in the market. The market for such non-volatile memory device is expected to expand mainly because of the inherent benefits like simplified memory management and improved system speed it offers. Rising demand for faster mobile memory chips is also contributing to the growth of this market. However, a major challenge that needs to be addressed is its design cost. Since all the production techniques are not intact, the process and design costs tend to rise. For resistive RAM, being newly introduced in the market, the issues like incompatibility and stability are yet to be overcome.

Some of the key players in this line of business are Avalanche Technology Inc, Everspin Technologies, Adesto Technologies Corporation Inc, Crossbar Inc, Samsung Electronics Co. Ltd, Fujitsu Ltd, Winbond Electronics Corporation, Micron Technology Inc, Panasonic Corporation, SK Hynix Inc and Cypress Semiconductor Corporation.