F-RAM remembers radio info
17 June 2008
Ramtron International’s non-volatile ferroelectric RAM (F-RAM) has been qualified for automotive.
The company’s FM24CL64 64kbit F-RAM is now specified to AEC-Q100 and can concentrate on the in-car entertainment while the driver concentrates on the road. It collects and stores dynamic data for advanced radio features such as issuing favourite artist/song alerts and last channel recall as well as remembering favourite radio stations.
It is able to record continuously changing data that must be available on power-up. The memory’s NoDelay feature writes up to 1trillion writes and with 45 years of data retention. Together with low operating currents and an I2C interface the EEPROM replacements are claimed to provide reliable data collection and storage at maximum bus speed and low power in intelligent infotainment..
The low power consumption allows traffic information to be collected and stored while the vehicle is not in use, so that drivers can access the most current data alerts as soon as they start the vehicle.
It can also be used to store digital sound parameters, such as filter configuration and factory settings as well as manual DSP settings, time delay adjustments for each channel and advanced controls for crossover and filter settings on each channel.
The FM24CL64 is part of the company’s family of Grade 1 (+125ºC) and Grade 3 AEC-Q100-qualified automotive memory products. The device operates at 3V over the Grade 3 automotive temperature range of -40ºC to +85ºC and draws 75μA for reads and writes at 100kHz.
The F-RAM is available in a “green” 8pin SOIC package.
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