EEPROM replacement?

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ufechner
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Posted by ufechner: Mon. Nov 19, 2007 - 02:28 PM
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Hello,

I am trying to port a 8-Bit AVR application to the AVK1101 demo board.

What would you suggest to use as EEPROM replacement for configuration data?

The internal flash or the dataflash?

Which of them is faster regarding the storage of a small amount of data (couple of bytes)?

Is there a easy-to-use driver available (like eeprom.h for 8 bit avr)?

Regards:

Uwe Fechner

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AVR Microcontrollers, AVR UC3
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hce
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Posted by hce: Mon. Nov 19, 2007 - 02:56 PM
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If you need a write once (or really seldom) I would recommend using the internal flash for configuration data. If you need a place to write really often, then a DataFlash will be most suitable.

I do not know about any driver for using the internal flash, but I know it has been done.

0.02€ :)

Hans-Christian

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squidgit
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Posted by squidgit: Mon. Nov 19, 2007 - 11:50 PM
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ufechner wrote:
Is there a easy-to-use driver available (like eeprom.h for 8 bit avr)?
There should be a dataflash driver in the UC3 software framework, grab it from the atmel website.

FWIW I like using serial FRAM for this kinda application. You'll need to write your own driver and make a little daughterboard but you've got a couple of million erase cycles and data is available as fast as your SPI can drag it out of there.

See for example http://www.ramtron.com/doc/Produ...

-S.

Blag: http://www.niasdigital.com/blag

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