Non-volatile RAM for industrial control systems
A Ramtron International product story
Edited by the Electronicstalk editorial team Jul 27, 2009
Ramtron International has announced the availability of its 8-megabit (Mb) F-RAM memory in a streamlined FBGA package.
The FM23MLD16 is an 8Mb, 3V, parallel non-volatile RAM in a 48-pin fine-pitch ball grid array (FBGA) package that features fast access, virtually unlimited read/write cycles and low power consumption.
Pin-compatible with asynchronous static RAM (SRAM), the FM23MLD16 targets industrial control systems such as robotics, network RAID storage solutions, multi-function printers, auto navigation systems, and other SRAM-based system designs.
The FM23MLD16 is organised as a 512K x 16 non-volatile memory, accessed with an industry standard parallel interface.
Access time is 60ns and cycle time is 115ns.
The device reads and writes at bus speed for no-delay writes with endurance of at least 1E14 (100-trillion) writes and 10-year data retention.
The FM23MLD16 offers superior performance over battery-backed SRAM as it does not require a battery for data backup.
The FM23MLD16 is a true surface-mount solution, requiring no rework steps for battery attachment and, unlike battery-backed SRAM, is highly resistant to moisture, shock and vibration, making F-RAM ideal for harsh industrial applications.
The FM23MLD16 includes a low-voltage monitor that blocks access to the memory array when supply voltage drops below a critical threshold.
The memory is protected against an inadvertent access and data corruption under this condition.
With a convenient interface to current high-performance microprocessors, the FM23MLD16 features a high-speed page mode that enables 8-byte burst read/write operations at up to 33MHz.
The device draws 9mA for reads/writes and a typical standby current of 180uA.
It operates from 2.7-3.6V over the industrial temperature range (-40C to +85C).
Samples of the FM23MLD16 are available now in a 48-pin FBGA package that is RoHS-compatible.
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