Ramtron introduces two F-RAM products

Edited by the Electronicstalk editorial team Apr 2, 2009

Ramtron has brought out the FM24V05 and FM24V10 parallel and serial F-RAM products, which offer high-speed read/write performance, lower voltage operation and optional device features.

The FM24V05 is 512-Kilobit (Kb) and the FM24V10 is 1-Mbit (Mb).

They are 2.0 to 3.6V serial non-volatile RAMs in eight-pin SOIC packages that use the two-wire (I2C) protocol.

The FM24V05 and FM24V10 feature fast-access NoDelay writes, an excessive amount of read/write cycles and low power-consumption.

The devices are drop-in replacements for 512Kb and 1Mb serial Flash and serial EEPROM memories in industrial controls, metering, medical, military, gaming and computing applications, among others.

The FM24V05 is ideal for non-volatile memory applications that require frequent or rapid writes, such as data collection, where the number of write cycles may be critical.

Demanding industrial controls can benefit from the FM24V05 where the long write time of EEPROM can cause data loss.

All serial F-RAM V-Family products can be equipped with optional device features including unique serial numbering and a customisable system reset.

Other devices within the Ramtron V-Family of F-RAM products include the recently announced FM25V05 (512Kb) and FM25V10 (1Mb) serial SPI products and the FM28V100 (1Mb) parallel non-volatile RAM.

The FM24V05 and FM24V10 are serial ferroelectric random access memories organised as 64K x eight-bit and 128K x eight-bit memory arrays, respectively.

They can be accessed using an industry-standard two-wire (I2C) communication interface.

Unlike an EEPROM, F-RAM serial memories do not need to be polled for a ready condition, since reads and writes occur at the full bus speed of the serial protocol.

The FM24V05 and FM24V10 support up to 3.4MHz bus speed, which represents a threefold increase in clock speed compared with previous I2C Serial F-RAM devices.

The FM24V05 and FM24V10 provide data retention for more than 10 years, while eliminating the complexities, overheads and system-level reliability problems caused by EEPROM and other non-volatile memories.

The FM24V05 and FM24V10 have a read-only device ID and can be ordered with a unique serial number and/or system-reset option.

The device ID provides information about the manufacturer, product density and product revision of the device.

The FM24V05 and FM24V10 operate over the industrial temperature range of -40C to +85C in a low voltage, low-power operation of 2.0-3.6V with an active current of less than 150 microamps (typical at 100KHz), 90 microamps in standby and five microamps during sleep mode.

Samples of the FM24V05 and FM24V10 are available in RoHS-compliant eight-pin SOIC packages.