What are the benefits of ReRAM / RRAM?
Weebit ReRAM (RRAM) is extremely low-power, and it has excellent endurance and retention – even at high temperatures and in harsh conditions, and it is scalable to advanced process nodes. It beats other NVMs on key metrics, including cost, power consumption, endurance, access time, and more. Visit The Weebit ReRAM Advantage to learn more.
Why is ReRAM better than flash?
Because flash has limits. It’s slower to write and erase, uses more power, and wears out sooner. ReRAM handles more write cycles, operates at lower voltages, and supports faster switching. ReRAM (RRAM) is also lower-cost to manufacture. Weebit ReRAM requires only two additional masks, compared to more than 10 added masks for eFlash. As a result, Weebit ReRAM only adds […]
What is the difference between flash and ReRAM?
ReRAM improves on Flash across the board. Faster write and erase Lower power consumption Higher endurance Better scaling with process nodes Flash still dominates for mass storage, but when performance, efficiency, or endurance matter, ReRAM (RRAM) is a better fit and, over time, is expected to supersede eFlash.
What is the difference between SRAM and ReRAM?
ReRAM (RRAM) is non-volatile memory, meaning that it retains data even when power is turned off. SRAM is volatile, meaning that it loses data when the power is off. SRAM is faster than DRAM and NVMs and has low latency, so it is often used in real-time applications as level-1 (L1) tightly coupled cache memory. However, SRAM is expensive, low-density, and power-hungry. […]
What is the difference between DRAM and ReRAM?
ReRAM (RRAM) is non-volatile memory, meaning that it retains data even when power is turned off. DRAM is volatile, meaning that it loses data when the power is off. DRAM is slightly faster in active use, but it constantly refreshes, which burns energy. ReRAM holds data without refreshing, making it more efficient for power-sensitive or persistent applications. DRAM is […]
How does eFlash compare to embedded ReRAM?
eFlash (embedded Flash) is a type of non-volatile memory commonly used in microcontrollers and SoCs for code storage. It’s typically implemented at mature nodes (e.g. 40nm, 65nm) where process constraints still allow it. eFlash relies on floating gate cells and is a FEOL (front-end-of-line) technology, requiring modifications to the core CMOS process — such as special oxides, high-voltage transistors, and dual-gate stacks. These additions […]
What is the difference between PCM and ReRAM / RRAM?
Both ReRAM (RRAM) and Phase Change Memory (PCM) are non-volatile memories (NVMs) that store data as resistance, but they rely on different physical mechanisms. PCM switches between amorphous and crystalline states using heat generated by electrical current, while ReRAM forms or ruptures a conductive filament within a resistive material. PCM integration typically involves phase-change materials and thermal management considerations, […]
What is the difference between MRAM and ReRAM / RRAM?
Both ReRAM (RRAM) and Magnetic random-access memory (MRAM) are a types of non-volatile memory (NVM) but they use different switching mechanisms. MRAM stores data by changing the magnetic orientation of layers within a magnetic stack, while ReRAM stores data by forming or rupturing a conductive filament in a resistive material. MRAM integration typically requires specialized magnetic materials and additional […]
Is ReRAM more secure than other NVM?
Weebit ReRAM demonstrates significant security-related advantages, enabling it to better protect its content from hacking attacks, and making it more difficult than other embedded NVMs to reverse engineer. MRAM, for example, is much easier to hack due to its magnetic nature. ReRAM (RRAM) is inherently able to withstand attacks via electron beams, optical lasers, magnetism, power analysis, […]
Why can ReRAM scale to advanced nodes geometries and embedded flash can’t?
Flash stores data as an electrical charge, and its memory cells have gotten nearly as small as they can get. It is simply not commercially viable below 28nm. ReRAM (RRAM) and some other emerging NVM technologies store bits as resistance and can therefore scale to more advanced nodes geometries. Read the ReRAM Guide to learn more.
If I am building a new SoC, why should I consider ReRAM instead of my current NVM?
The answer depends on your target process node and application requirements. Embedded flash does not scale effectively below 28nm, while ReRAM (RRAM) integrates in the back end of line (BEOL), preserving front-end analog performance and enabling advanced-node designs. Compared with flash, ReRAM typically requires fewer masks, supports lower power operation, and enables faster programming. Versus […]