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Build reliable flash for car infotainment

Posted: 03 Sep 2007 ?? ?Print Version ?Bookmark and Share

Keywords:flash file system car? car infotainment devices flash? error-correction wear-leveling?

Automotive infotainment and telematics electronics can write and read massive amounts of data from flash memory devices. In turn, flash memory devices must remain reliable and error-free for extended periods of time. For instance, the flash chip embedded in a vehicle navigation system must survive many years of constant use. Users never expect to lose data, experience long boot times or endure long data-recovery times. These put considerable demands on the file system technology that controls the data on flash chips.

To complicate matters, automotive embedded designs must keep costs to a minimum. The BOM typically has no room for hardware that can manage power fluctuations or uncontrolled shutdowns, either of which can result in flash memory corruption and subsequent loss of service. Consequently, flash file system technology cannot simply provide high read/write throughputit must also be self-healing and fully accessible within milliseconds after boot.

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