RRAM-Info: the RRAM experts

RRAM-Info is a news hub and knowledge center for Resistive RAM technologies.

Resistive RAM is a non-volatile computer memory that uses materials that change their resistance - or memristors. RRAM is still in its early stages, but it may enable fast, efficient and small memory chips

Recent RRAM News

Panasonic and UMC to co-develop and produce RRAM chips by 2019

Feb 01, 2017

Panasonic announced a new partnership with Taiwan-based United Microelectronics Corp (UMC) to co-develop and produce RRAM devices. The two companies aim to use a 40nm process to produce RRAM chips that consume one-seventh the power of today's NAND flash memory.

Panasonic will be in charge of designing the chips, and the two companies will co-develop the microfabrication technologies. Actual production will be done at UMC. The two companies plan to start shipping samples in 2018 and mass produce RRAM chips by 2019. The first RRAM devices will be embedded in microcontrollers.

Crossbar starts to sample RRAM chips at SMIC

Jan 22, 2017

Crossbar logoIn March 2016 Crossbar announced its strategic partnership with Semiconductor Manufacturing International Corporation (SMIC) to co-develop and produce RRAM technologies. Crossbar now says it started to sample embedded RRAM chips from SMIC.

SMIC, China's largest semiconductor foundry, is using a 40nm process, and Crossbar says that it plans for a 28nm process - and even 10nm or lower down the road. The chip design uses non-conductive amorphous silicon (a-SI) technology. Crossbar's chips can either use a 1T1R architecture (1 transistor per RRAM, which offers the lowest latency and so useful for embedded memory and caching) or 1TnR (which uses up to 2,000 cells per transistor using a crossbar scheme - which makes for higher density chips useful for storage).

Used egg shells used to create RRAM devices

Jan 21, 2017

Researchers from the Guizhou Institute of Technology in China produced RRAM devices using finely ground used egg shells. These devices were not very durable - they only lasted about 100 write cycles...

To create the devices, the researchers ground the egg shells until they got a 'nanoscale' powder. They then dried it and dissolved it in a solution. The solution was than used to coat a substrate to form the electrolyte part of the RRAM device.

Researchers turn RRAM chips into extremely fast logic processors

Jan 04, 2017

A team of international researchers, from China (Nanyang Technological University), Singapore (NTU) and Germany (RWTH Aachen University and Forschungszentrum Juelich) developed a technique to turn RRAM chips into logic processors.

The researchers say that these kind of processors eliminate the need to transfer data between memory storage and the computational unit (as it is now the same unit) - and so these processors could be at least two times faster than current processors. The new processors will also be smaller than current designs.

KAIST researchers deposit RRAM on SSG to create a security memory device that rapidly dissolves in water

Dec 25, 2016

Researchers from the Korea Advanced Institute of Science and Technology (KAIST) developed a security RRAM device that can be dissolved in water in less than 10 seconds. The idea, it seems, is that this kind of device can be disposed of quickly and safely.

Soluble RRAM device (KAIST)

The RRAM device was produced on a solid sodium glycerine (SSG) substrate, which is water soluble. The RRAM chip itself was deposited using an inkjet-printer.

Leti researchers look into RRAM endurance, window margin and retention

Dec 10, 2016

Researchers from Leti presented a new paper that clarified for the first time the correlation between endurance, window margin and retention of RRAM. The researchers advice ways module these three key properties, in different RRAM types.

Each RRAM type and base material has a different "sweet spot" that offers the best performance in all three categories. Using modelling the researchers were able to address various non-volatile memory applications, targeting high speed, high endurance or high stability.