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non volatile memory

Vida Vela

I am wondering how to save a variable's value in case of power reset.
I am creating a program to write to a display and I want to keep track
of the selection that the user made before the system power went
down and got reset. How can I do this?

Thanks for any help, Vida

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  • 0 in reply to Sven Petersen

    FYI:

    We have been using FRAM for about 3 years and it works great. They have an 8k byte serial device that is SSC (SPI) compatible. You don't have to worry about erasing or programming them. Just write your data using their protocol designed to eliminate inadvertant write cycles.

    I also recently heard that Motorola is working on something using the same or similar technology in a parallel version with much larger densities that can be used to store program and data. They are debating if they should implement the technology in their micros only or if they should offer it in a stand-alone package also.

    -Walt

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  • 0 in reply to Sven Petersen

    FYI:

    We have been using FRAM for about 3 years and it works great. They have an 8k byte serial device that is SSC (SPI) compatible. You don't have to worry about erasing or programming them. Just write your data using their protocol designed to eliminate inadvertant write cycles.

    I also recently heard that Motorola is working on something using the same or similar technology in a parallel version with much larger densities that can be used to store program and data. They are debating if they should implement the technology in their micros only or if they should offer it in a stand-alone package also.

    -Walt

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