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

Xianxim Technology starts producing the world's first 28 nm image quality driver IC for miniLED LCD TV makers

China-based Xianxin Technology, in collaboration with several research institutes in China, have developed the world's first 28 nm image quality adjustment chip that is powered by embedded RRAM memory.

The company says it is now mass producing the new driver IC, which will be supplied to high-end miniLED LCD TV makers. The company says that by adopting RRAM rather than the mainstream external Flash memory, it enables faster read operations, and lower cost production. 

Read the full story Posted: Sep 12,2024

Researchers from the University of Michigan explain the role of phase separation in RRAM mechanism

Researchers from the University of Michigan have discovered the role of phase separation in memristor mechanism, thus paving the way to improving RRAM memory. 

Up until now, researchers were not sure why memristors retain their memory for a long time, as current models did not explain this fully. The new researchers explain that in memristors, oxygen ions prefer to be away from the filament and will never diffuse back, even after an indefinite period of time.

Read the full story Posted: Sep 11,2024

New Radio Tech launches an RRAM-powered ultra-wideband chip

China-based wireless IC designer New Radio Tech (NRT) introduced a new Ultra-WideBand (UWB) chip, the URSAMAJOR 82660, that integrates RRAM. We assume that the embedded RRAM technology was provided by Hefei Reliance Memory, but we're not certain.

The company says that integrating the RRAM into their chip is a major achievements, and it allows them to reduce the chip's footprint by 40%, while being highly cost effective compared to conventional chips that are based on external Flash or integrated eFlash solutions.

Read the full story Posted: Sep 06,2024

Weebit Nano and DB HiTek tape out their first 130nm RRAM demonstration chip

In October 2023 RRAM developer Weebit Nano announced that it has signed a licensing agreement with DB HiTek, a Korean-based foundry (said to be one of the world's top 10 foundries). The commercial agreement includes technology transfer, qualification and licensing.

Weebit Nano chip photo

Yesterday Weebit announced together with DB HiTek that it has taped-out (released to manufacturing) a demonstration chip integrating Weebit’s embedded RRAM module in DB HiTek’s 130nm Bipolar-CMOS-DMOS (BCD) process. The highly integrated demo chips will be used for testing and qualification ahead of customer production, while demonstrating the performance and robustness of Weebit’s technology.

Read the full story Posted: Jul 31,2024

Visionox, Sunrise Display Microelectronics and Hefei Reliance Memory develop the world's first AMOLED driver with RRAM memory

China-based OLED producer Visionox, together with Sunrise Display Microelectronics and Hefei Reliance Memory, developed the world's firs AMOLED device driver that is powered by RRAM memory. 

All AMOLED drivers on the market use a combination of SRAM memory, OTP (one-time programmable memory) and external Flash memory (for non-volatile memory), mostly to perform the Demura compensation function. The RRAM memory enables lower cost of production, higher efficiency - and smaller area.

Read the full story Posted: Jul 29,2024 - 2 comments

Researchers design a versatile compact RRAM model that can model different types of RRAM devices

Researchers from The University of California, Berkeley, designed a new versatile compact RRAM model that can model different types of RRAM devices such as oxide-RRAM (OxRAM) and conducting-bridge-RRAM (CBRAM). 

The researchers say that their new model unifies the switching mechanisms of these RRAMs into a single framework. The researchers showcase the model’s accuracy in reproducing published experimental device DC and transient characteristics of various RRAM structures. They also demonstrated the model’s efficacy in capturing RRAM variability and conducting 1T1R circuit simulations.

Read the full story Posted: Jul 18,2024

Nuvoton launches an energy-efficient microcontroller that features 512Kb RRAM

Nuvoton Technology launched the M2L31, a new energy-efficient microcontroller, that features up to 512Kb of high-performance low-power non-volatile RRAM.

The M2L31 is based on an Arm Cortex-M23 core (up to 72Mhz), and is designed to meet the growing demand for sustainable high-performance embedded computing power. Nuvoton explains that a main contributor to the high efficiency of the new chip is its choice of memory, an on-chip RRAM instead of flash memory that draws less power and can be written to without an erase cycle beforehand.

Read the full story Posted: Jun 23,2024

Weebit Nano announces a new partnership with Efabless

Israel-based RRAM developer Weebit Nano announced a new partnership with Efabless, a creator platform for semiconductor chips, to enable faster and more cost-effective prototype creation of new System-on-Chip (SoC) designs using Weebit’s RRAM technology.

The agreement provides Efabless’ thousands of users and customers with access to Weebit’s IP, which can be incorporated into their designs manufactured using SkyWater Technology Foundry’s 130nm CMOS process. Weebit’s RRAM technology is already proven and qualified up to 125C in SkyWater Technology’s US production fab.

Read the full story Posted: May 28,2024

4DS Memory renews its R&D collaboration with IMEC

In 2017, Australia-based RRAM developer 4DS Memory signed an agreement with Belgium-based IMEC to develop a transferable manufacturing process for its technology. 4DS now announced that it has renewed its R&D collaboration with the IMEC research institute after receiving positive results from its fourth lot of test chips.

4DS will pay IMEC 1.92 million Euro for the activities in 2024, and the company expects IME to deliver its 5th and 6th batch of 1 Mbit array chips in Q3 2024. The 6th batch will be based on a 20 nm process. 

Read the full story Posted: May 27,2024

4DS developed a new RRAM technology for AI processing

Australia-based RRAM developer 4DS Memory announced a new type of RRAM technology specifically for AI processing, that enables high-bandwidth, high-endurance persistent memory for big data and neural net applications.

4DS says that as its RRAM requires no refresh within its persistence window and can be 'refreshed' within the DRAM operating window, it can uniquely deliver an energy efficient high bandwidth and high endurance memory technology for the AI Age.

Read the full story Posted: May 25,2024