click to visit home page
leading the way to the new storage frontier .....
SSDs over 163  current & past oems profiled
SSD news ..
SSD SoCs controllers
SSD controller chips ..
image shows mouse building storage - click to see industrial SSDs article
industrial SSDs ..
storage interface chips and controllers ..
storage glue chips
Military storage
military storage ..

Crocus Technology

Crocus Technology, founded in 2006, is a leading provider of secure microcontrollers for the mobile and security industry. The company develops Magnetic Logic Unit, a CMOS based rugged magnetic technology capable of offering advanced embedded security. Crocus' MLUs read and write faster than Flash memory and have a smaller footprint. This enables Crocus' MLUs to offer significant advantages in performance, security and cost-effectiveness, making them ideal for use in smartcards and other embedded memory products. It has offices in Santa Clara, US, Grenoble and Gardanne, France. For more information, please visit:

Editor's comments:- November 2012 - just as modern flash memory needs controllers to facilitate the development of useful products, so too do other non volatile memories.

Crocus ia a leading pioneer of MRAM enabling controller technologies - which nowadays it prefers to refer to as Magnetic Logic Units. These bundle MRAM memory and controller technologies into IP and chips which can easily be assimilated and adapted into designs as secure, low capacity nvm alternatives to flash - which can operate at high temperatures (e.g., >200° C) and don't suffer from write endurance limitations.

Crocus mentions in SSD market history

Crocus's 2008 whitepaper - the Emergence of Practical MRAM (pdf) - gives the best explanation I've seen of why, despite so many companies entering the MRAM market, so few useful products have actually come out. It describes flaws in the basic technology which lead to data corruption (similar in concept to read-disturb errors in flash - although completely different physically). It's necessary to fix these problems to enable relaible data storage. The paper describes the proposed solution and also compares MRAM's data density to other semiconductor memory technologies, including SRAM, DRAM and flash.

In June 2009 - semiconductor foundry Tower Semiconductor, announced it had taken an equity position (value approx $1.25 million) in Crocus, and announced it was porting Crocus's MRAM to its 200mm wafer fab.

In May 2011 - Crocus announced it has closed a funding agreement worth $300 million to create an MRAM facility in Russia, capable of manufacturing at 90nm and 65nm lithographies.

In November 2012 - Crocus Technology announced that in January 2013 it will sample high speed 1.2MB MRAM SIMs and small secure MRAM controllers - or what the company prefers to call - "Magnetic Logic Units" - which are aimed at the NFC-enabled smartphones market.

In April 2013 - Crocus Technology announced it has been awarded a contract from IARPA to develop an 8-bit per cell memory based on its Magnetic Logic Unit technology.

SSD ad - click for more info

If you're interested in Crocus you may also be interested in some of these articles

storage security
flash and other nvm
fast purge / erase SSDs
Surviving SSD sudden power loss
flash SSD's past phantom demons
adaptive R/W and DSP in flash SSDs
Data Integrity Challenges in flash SSD Design
Efficiency as a competitive advantage between SSDs
Sanitization Methods for Cleaning Up Hard Disk Drives

storage search banner

industrial mSATA SSD
industrial grade mSATA SSDs
>2 million write cycles per logical block.
from Cactus Technologies
ARM licenses MRAM from Crocus
Editor:- January 29, 2014 - Crocus Technology today announced it has licensed its MLU (Magnetic Logic Unit) technology (aka MRAM) to ARM to use as a potential alternative to flash memory in future micro-controllers.

Among other characteristics - Crocus's MLU technology can provide low density NVM functionality which operates up to 250 degrees C.

See also:- 10+ years of - "MRAM will soon replace flash"
SSD ad - click for more info
Crocus gets funding for x8 multibit magnetic semiconductor memory
Editor:- April 8, 2013 - Crocus Technology today announced it has been awarded a contract from IARPA to develop an 8-bit per cell memory based on its Magnetic Logic Unit technology.

This will greatly reduce the energy consumed per written-bit compared to any other memory technology, including DRAM, Flash, SRAM and MRAM.

Douglas Lee, VP, product development at Crocus compared the 8 bits per cell which the company thinks it can get from its MLU technology with the state-of-the-art in nand flash - which is 3-4 bits per cell and also compared to alternative magnetic semiconductor technologies like MRAM - which is still only 1 bit per cell storage (SLC).

Editor's comments:- here's some context.

If it were possible to do x8 MLC flash - then Samsung's model 840 SSD would have 16TB capacity instead of the 512GB which it has using x3 (TLC) - which is the state of the art bits per cell shipping in a regular 2.5" SSD. But don't get too excited by this comparison as x8 flash currently exists only in the realm of science fiction.

Having multibit capability in a magnetic semiconductor cell will undoubtedly be a breakthrough for that type of non volatile technology. But the density of such x8 MLU memories would still be 100x smaller than today's flash. The good news is that unlike flash - MLU will operate at very hot ambient temperatures - past 200 degrees C.

See also:- military SSDs, 10 years of other storage media which failed to kill flash