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DFML

Atmel DataFlash is the world’s leading serial flash memory family. It contains a number of features that make it an excellent partner for embedded applications in general and for HCC’s file system solutions in particular:

  • Unrivalled access speed
  • Dual RAM buffers for storing pages
  • Small erasable page size
  • Low power consumption

HCC's DFML is designed to be a clean interface layer between a file system and DataFlash devices. It provides a substantial set of features:

  • A reliable and fail-safe page write operation, ensuring that critical data will always be reliably written to the device even in the event of power loss
  • A normal page write for non-critical data
  • Managed sectors set aside for non-file system usage
  • Unmanaged sector reservation for private functions, such as boot memory operations
  • 10K random write per sector refresh operations are managed transparently
  • Optional error correction algorithms for added reliability
  • Enhanced wear leveling operations
  • Support for multiple devices in a single array

DFML technology can provide a robust DataFlash file system for a PC-compatible or fail-safe application. It supports the following DataFlash devices:

 

Density
Serial DataFlash
DataFlash Cards
1Mbit
AT45DB011B
 
2Mbit
AT45DB021B
 
4Mbit
AT45DB041B
 
4Mbit
AT45DB041D
 
8Mbit
AT45DB081B
 
16Mbit
AT45DB081D
AT45DCB002D
32Mbit
AT45DB321C
AT45DCB004C
32Mbit
AT45DB321D
AT45DCB004D
64Mbit
AT45DB642D
AT45DCB008D

 

DFML fully supports all legacy DataFlash products.

DFML is normally bundled with one of HCC's file systems and is licensed on a per product or  "product-line" basis.

Atmel® and DataFlash® are registered trademarks of Atmel Corporation