You'll probably find that SPI sram is targetted at small, low power
devices, and as such you'll have a difficult time finding 5V versions.

You might consider using a 3.6V SPI sram, which would require a cheap
regulator. If the tolerances are right, you may be able to use that
with a resistor rather than a full conversion circuit directly to your
PIC.

You'll find the world is largely moving towards 3.6V and lower for
electronics - it might make sense for you to move your whole circuit
down rather than finding new cheap parts that support 5V.

-Adam

On Mon, May 18, 2009 at 8:26 AM, David Duffy (AVD)
<david@audiovisualdevices.com.au> wrote:
> For our open source text messaging system, we need to buffer incoming
> and outgoing messages in SRAM, as the lower end =A0PICs have nowhere near
> enough RAM for the application.
>
> Microchip have their SPI 23xx series but only in 1.9V & 3.6V types. What
> are others using that's readily available, SPI and not too expensive?
> David...
>
> --
> ___________________________________________
> David Duffy =A0 =A0 =A0 =A0Audio Visual Devices P/L
> Unit 8, 10 Hook St, Capalaba 4157 Australia
> Ph: +61 7 38235717 =A0 =A0 =A0Fax: +61 7 38234717
> Our Web Site: www.audiovisualdevices.com.au
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