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Atmel DataFlash Management Layer

Atmel DataFlash is the world’s number one selling serial flash memory family and contains a number of features that make it an excellent partner to HCC’s file system solutions and embedded applications:

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

The DFML is designed to provide a clean interface layer between a file system and DataFlash devices and provides.

  • A reliable and fail safe page write operation ensuring that a 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
  • Allows managed sectors to be set aside and reserved for non-file system usage
  • Allows unmanaged sectors to be reserved for private function e.g. Boot memory operations
  • 10K random write per sector refresh operations are managed transparently
  • Provides optional Error Correction algorithms for added reliability
  • Provides enhanced wear leveling operations
  • DFML-M allows multiple DataFlash devices to be supported as a single array.

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

Density

Serial DataFlash

Serial Firmware DF

DataFlash Cards

1Mbit

AT45DB011B

 

 

2Mbit

AT45DB021B

 

 

4Mbit

AT45DB041B

AT26DF004

 

4Mbit

AT45DB041D

AT26F004

 

8Mbit

AT45DB081B

AT26DF081

 

16Mbit

AT45DB081D

AT26DF161

AT45DCB002D

32Mbit

AT45DB321C

 

AT45DCB004C

32Mbit

AT45DB321D

 

AT45DCB004D

64Mbit

AT45DB642D

 

AT45DCB008D

The DFML also fully supports all Legacy DataFlash products

Pricing - The DFML is normally sold bundled with one of HCC's file systems and is licensed on a per "product-line" basis. Prices start from around 2K USD.

Atmel® and DataFlash® are registered trademarks at Atmel Corporation