> I am a relative newbie, and am designing a series of products based on the
> PIC16F87X and possibly the PIC16F628 that will all need to communicate
with
> each other (multi Master) over distances of up to say 50m.
>
> Is I2C a suitable choice? Can I run the PICs as slow as 4MHz, or would I
> need to go higher than this? I plan to send simple commands and
> acknowledgements only.

I would never use i2c over that distance. Why not use rs485?

Wouter van Ooijen
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Van Ooijen Technische Informatica: http://www.voti.nl
Jal compiler, Wisp programmer, WLoader bootloader, PICs kopen

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