Re: Adding RAM to Cypress PSoC

I understand not wanting to change processors. But the
reconfigurability of the PSOCs is a bit of a red herring. The idea is
that it can be a cheaper part by letting you reuse the same hardware to
do different things at different times. But just like with FPGAs,
there are very few designs that can take advantage of that. Also, the
price advantage of this approach can be very minimal due to the extra
chip area requried to make the features programmable. But with current
process geometries, processors often are pin count limited; they have
to be a certain size to have the pin connections. It is not
automatically cheaper to have a smaller processor with the same number
of pins.

In the end it can be just as cost effective to use a processor with
standard peripherals, although it will depend on your unique
requirements. If you need working ram, it will be very slow to add it
onto the PSOC and require some of that programmable IO which is what
you are trying to optimize.

Digikey has SAM7S32s for $4. I expect in any quantity that would make
a difference, you can get them for $2.50 or less. If push comes to
shove, you can add the SAM7 as a smart RAM and you'll get 8 KB!



KenLem wrote:
> The part I'm using only has 512 Bytes but PSoC's reconfigurablity and
> features are mandatory for what I am doing. I have no option and do
> not wish to change processors.
>
> I'll think of something.
>
> rickman wrote:
> > KenLem wrote:
> > > I want to add serial RAM to Cypress PSoC. I'm looking for something
> > > around 4K Bytes- ( 4096 x 8) 64KBytes (65536 x 8) for < $2. It doesn't
> > > have to be non-volatile.
> > >
> > > I'm planning on adding some RAMTRON FRAM to use a storage but my
> > > appliation needs RAM to run.
> > >
> > > Any suggestions?
> >
> > Yeah, in all honesty, if you need more ram on a PSOC, you need a new
> > part. Have you looked at the other processor families?

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