If you do a digikey search for "SRAM", select RAM, then narrow your
search to I2C, 1 wire, and 3 wire interface you'll find a few other
than FRAM (Digikey doesn't carry ramtron fram).

Looks like Dallas and NXP are your friends.  NXP has a wide voltage
range.  Dallas appears to have battery backed SRAM modules of some
sort - may not be suitable.

If all else fails, buy parallel SRAM and use a PLD or PIC in front of
it for the serial interface.  Might be cheaper than FRAM.

-Adam

On 5/16/08, Harold Hallikainen <harold@hallikainen.org> wrote:
> This has been asked numerous times over the years, but I don't think I've
> seen it recently. Is anyone aware of any SPI RAM to expand upon the PIC's
> internal RAM? So far my best bet appears to be FRAM
> (http://www.ramtron.com/products/nonvolatile-memory/serial.aspx ). Other
> ideas?
>
> Thanks!
>
> Harold
>
>
>
> --
> FCC Rules Updated Daily at http://www.hallikainen.com - Advertising
> opportunities available!
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>


-- 
EARTH DAY 2008
Tuesday April 22
Save Money * Save Oil * Save Lives * Save the Planet
http://www.driveslowly.org
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist