Press Releases

CrossBar Announces New ReRAM Use for FTP and OTP Memory Applications

Few-Time and One-Time Programmable Memory Applications Using ReRAM

SANTA CLARA, CA, October 12, 2021 - CrossBar Inc., a leading non-volatile memory technology provider, today announced new applications of its Resistive RAM (ReRAM) technology for use in few-time programmable (FTP) and one-time-programmable (OTP) non-volatile memory (NVM) applications.

While historically utilized as a high-performance, high-density multi-time programmable (MTP) non-volatile embedded semiconductor memory, CrossBar’s Resistive RAM technology is now being used for FTP and OTP memory applications.

“CrossBar partners are beginning to utilize our high-performance ReRAM not only for embedded MTP non-volatile memory and PUF security applications, but also for typical FTP and OTP applications,” said Mark Davis, President and CEO at CrossBar, Inc. “We’ll satisfy this initial demand with our current ReRAM technology, but also can optimize our ReRAM for FTP and OTP applications, significantly increasing memory density and reducing cost while maintaining the many benefits of CrossBar’s unique filament based ReRAM technology.”

FTP and OTP typically operate as NVM with the ability to be written only a few times (FTP) or exactly once (OTP). This type of memory is utilized for program/boot code or data unique to each semiconductor such as trim bits or chip IDs. FTP/OTP technologies such as electrical fuse, anti-fuse or floating gate often have disadvantages such as single write cycle limitations presenting difficulties in detecting bad bits, requiring complex operational circuitry and having lower density/higher cost. In addition, existing FTP/OTP technologies may require high programming voltages resulting in higher leakage current in standby mode.

CrossBar’s non-volatile high-performance MTP ReRAM can also be used for FTP and OTP applications, eliminating many of these disadvantages. ReRAM can be written multiple times (typically 100K to 1M writes) without many of the drawbacks of current OTP and FTP technologies.

Since MTP, FTP, OTP memories and physical unclonable function (PUF) keys are able to share a monolithic ReRAM manufacturing process and control circuity, it’s possible for a single chip design to be customized by dynamically reallocating memory during test time or at run-time, offering CrossBar customers additional flexibility.

CrossBar’s ReRAM technology is enabling a new class of computing, addressing the needs of high-performance, high-density MTP as well as FTP, OTP memories and PUF keys for security applications, which is especially useful for foundry nodes smaller than 28nm where embedded NVM is not readily available.

CrossBar Resources

About CrossBar, Inc.

CrossBar is the leader in ReRAM technology, enabling kilobytes to terabytes of always-on data storage to be embedded into any SoC or as a standalone memory chip. CrossBar ReRAM lets designers rethink the compute/storage paradigm, free from the constraints of traditional flash and DRAM memories. From “persistent memory” that brings data closer to the CPU, ReRAM is ushering in a new era of data storage and secure computing. For more information, visit


CrossBar Media Contact: