> I need non-volatile RAM for a PIC based design.  Because of size restraints I
> would prefer it interfaced on the I2C bus.  Also, the RAM will be used to stor
e
> individual parameters, requiring modifying single locations.
>
> Does anybody know of companies that have such a product?

Usually you would use some serial EEPROM (or the 16c84). However, if
it must be RAM for some reason, you might want to try the 24KF04
by National Semiconductor.
This is a ferroelectric RAM, serially interfaced (like 24x04 of
other companies).

Mike

--
Dipl.-Ing. Michael Hermann   mch@regent.e-technik.tu-muenchen.de
Lehrstuhl fuer Rechnergestuetztes Entwerfen,     Postfach 202420
Technische Universitaet Muenchen                    089/21053651