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Related to F-RAM: Ferroelectric RAM


(1) (fram) (FRiend spAM) Jokes and information forwarded directly to friends via email as well as social media notifications every time people post something they think is memorable. See spam.

(2) (Ferromagnetic RAM) A non-volatile memory that records bits on a magnetic surface. See MRAM.

(3) (Ferroelectric RAM) A non-volatile, random access memory technology from Ramtron International Corporation, Colorado Springs, CO (www.ramtron.com). With product shipping since 1993, F-RAM was the first commercial non-volatile RAM on the market using standard CMOS fabrication. It was initially designed as a high-performance alternative to EEPROM memory with write speed that is orders of magnitude faster and virtually unlimited write cycles. Having the attributes of RAM and the non-volatility of flash, F-RAM may eventually replace flash, DRAM and SRAM.

Polarization in a Crystal
F-RAM uses a ferroelectric capacitor composed of a crystal made up of lead and oxygen atoms plus zirconium or titanium. The crystal has two stable states. When an electric field is applied, the zirconium or titanium atom changes position. The read circuit detects the polarity of the atom as a difference in voltage, which determines the 0 or 1.

The ferroelectric name was chosen because the hysteresis characteristic of the capacitor's charge is similar to ferromagnetic materials. It is somewhat misleading because the capacitor is not made of iron (ferrous), and it is not influenced by magnetic fields. See future memory chips.

The Perovskite Crystal
Ferroelectric capacitors use perovskite crystals, which are found in certain rocks. Named after Russian mineralogist L. A. Perovski, the red dot in the middle is the titanium or zirconium atom, which changes its position. (Image courtesy of Ramtron International Corporation, www.ramtron.com)

Easy Integration
Providing the fastest non-volatile memory in this microcontroller (MCU), a small amount of F-RAM is integrated on this chip with SRAM and flash memory, input/output and processing circuits. (Image courtesy of Ramtron International Corporation, www.ramtron.com)

Just A Few Bits
These Ramtron chips provide non-volatile storage of two or four F-RAM bits in order to maintain the state of a single switch or relay (top) or an LED (bottom). When power is turned back on, these "Nonvolatile State Saver" ICs provide the last known state. (Image courtesy of Ramtron International Corporation, www.ramtron.com)
References in periodicals archive ?
Cypress is maintaining Ramtron part numbers, which represent the market's widest range of F-RAM densities, to help support existing F-RAM customers.
Ramtron International Corporation (Nasdaq:RMTR) announced Monday that SBS Science and Technology Co Ltd has selected the FM22L16 4Mb F-RAM (ferroelectric random access memory) for use in a solid state disk data storage device.
Cypress F-RAM is the most energy-efficient NVRAM technology in the industry with a virtually unlimited 100 trillion write cycle endurance.
F-RAM s inherent nonvolatility provides instant data capture and retention for one hundred years with no batteries.
Under the long-term agreement, ROHM will manufacture F-RAM-based semiconductor products for Ramtron on ROHM's established F-RAM manufacturing line.
As a result, the Ramtron Board of Directors believes that Cypress' unsolicited proposal fails to reflect the Company's strengthened competitive position, F-RAM intellectual property and deep know-how, and strong prospects for long-term growth, as well as the progress being made toward expanding the Company's product portfolio beyond specialty memory products to also include integrated semiconductor solutions," concluded Dr.
In addition, MaxArias wireless F-RAM memory products, like the WM72016 included with the kit, are capable of capturing large block writes -- up to 127 words-- without loss of data integrity or compromising read/write speed and distance.
Announced a 2-megabit (Mb) high-performance serial F-RAM device, which is a cost-effective drop-in replacement for 2Mb serial Flash and EEPROM memories in a broad number of applications including industrial controls, metering, medical, military, gaming, and computing systems.
The adoption of F-RAM technology and products is growing quickly and Ramtron is a leading supplier in this product category," said Mark Zack, Digi-Key's vice president of semiconductors.
With a revamped sales and marketing strategy focused on deepening customer engagements, we are now well positioned to define high value products and speed time to first revenue while continuing to drive F-RAM adoption.
semiconductor maker Ramtron International Corporation (Nasdaq: RMTR), a leading developer and supplier of low energy nonvolatile ferroelectric random access memory (F-RAM) and integrated semiconductor products, today announced that it has made initial customer deliveries of a custom designed F-RAM device built on its new IBM manufacturing line in Burlington, Vermont.
Jim's experience as a senior executive combined with his deep knowledge of international foundry operations and technology development will be of great value to our team as we optimize our manufacturing processes and drive the adoption of our F-RAM enabled semiconductor products," said Eric Balzer, Ramtron's CEO.