At 14:19 24/03/00 -0000, you wrote:
>Having searched through the PICLIST archives and many
>PIC related web-sites, there are plenty of
>references/threads concerning these devices, but not a
>great deal of substance.
>
>Is anybody out there aware of any 'definitive' web
>resources (other than Dallas) detailing interfacing
>these devices to PIC uCs. I'm particularly interested
>in the touch memory/iButton (as opposed to the
>temperature sensitive units).

Download UMPS eval version, you will find with it a project that work
with source file for 16C84 to interface a DS1820. Memory iButton use
exactly same protocol, so once you have the set of routine that
work, you just need to change command word in order to interface
either a DS1820, a DS1990 or other ...

( UMPS at http:\\www.vmdesign.com )

Best regards,
        Philippe.

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