|
Industrial computers today require an advanced memory technology that ensures data integrity. Systems such as single board computers (SBC), RAID controllers, smart I/O extension modules, etc. are being increasingly fitted with F-RAM instead of Flash, SRAM, and EEPROM memory technologies, where F-RAM’s non-volatility, NoDelay™ writes, and virtually limitless endurance are ideal for guaranteeing data storage, protecting system status, and preventing data loss in the event of a power failure. |
|
F-RAM instead of Flash/EEPROM/SRAM for nonvolatile data storage |
F-RAM is used to store the BIOS, OS, additional system software, and vital system data on SBCs and other industrial computer systems like multi-board PC/104. High-density F-RAM devices are organized in nonvolatile memory arrays that the system can directly boot from to restore the latest operating status within milliseconds of a reboot. F-RAM is an ideal replacement for Flash in this application because its fast writes and high endurance make it inherently more reliable. |
|
F-RAM is also being used instead of EEPROM and SRAM in the interface logic of smart I/O modules to enable fast read/write access and guarantee data integrity without the need for a battery or other external components. All data transferred between the computer and the modules is stored in the F-RAM at bus speed and is protected if the power fails. Additionally, this stored data allows the module to resume at exactly the same point when power is restored. |
|
F-RAM simplifies the design cycle by eliminating: |
|
- The code overhead accompanying Flash data storage
Unlike Flash, F-RAM bytes can be modified without first erasing an entire sector, rendering it easier to use. | |
|
|
|
F-RAM is a well suited memory design for the small, rugged PC/104 board, which can require extended temperature operation (-40°C to +85°C) for military applications such as high altitude aircraft or in a sealed enclosure in a desert operation. F-RAM's monolithic form factor makes it an ideal choice for the highly space constrained industrial board. |
|
-
- The limited endurance and drawn out write cycles of Flash/EEPROM
F-RAM provides virtually unlimited read/write cycles and fast data writes.
- The need for a battery to backup data, making it inherently more reliable than SRAM
F-RAM records data nonstop at bus speed, preserving it even if power is removed without the need for an external capacitor. This reduces board size, component count, and costs. |
| |