The ReRAM cell structure that was developed by Sony and can realize 100-Gbit-class integration
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Sony Corp started to commercialize an ReRAM (resistive random-access memory) being developed by Sony Semiconductor Solutions Corp.

The ReRAM is targeted at "storage-class memories (SCMs)," non-volatile memories that feature a higher speed than NAND flash memory and fill the gap between DRAM and NAND flash memory. If an ReRAM for SCMs is commercialized, it will be a product in a new category for the Sony group, meaning a new business.

Specifically, Sony aims to commercialize an ReRAM developed based on Sony Semiconductor Solutions' cross point-type ReRAM suited for integration. In June 2017, Sony announced it as a technology that can realize 100-Gbit-class integration at 2017 Symposium on VLSI Technology (VLSI Symposium) (See related article).

At Flash Memory Summit (FMS) 2019, the world's largest-class event on flash memory, which took place from Aug 6 to 8, 2019, in Santa Clara, the US, Sony announced a driver technology for ReRAM, indicating that the company is moving forward with the development for commercialization.

As a memory for SCMs, there is Intel Corp's "Optane" non-volatile memory using the "3D XPoint" technology. While the Optane has a large presence in the SCM market, Sony emphasizes that its ReRAM has a smaller power consumption and can be more easily densified than the cross point-type phase-change memory (PCM) used by the Optane. Sony plans to release a module product at the time of commercialization as in the case of the Optane.

Original Japanese article