Alan King wrote:
> 
> Tjaart van der Walt wrote:
> >
> > I am looking at Ramtron's FRAM at the moment (thanks, Andy),
> > because it can read and write at 2.1Mbits. The only disadvantage
> > is the max memory size (4kbits) of these parts.
> >
> 
>   Hmm, I thought the other major drawback to these was that
> reads cause wear as well as writes.  May have been improved
> and not be a problem now, but at 50 MHz you could run into
> that wall if it's still there..

They are rated for 1E10 write cycles! Walter suggested that 
the SPI reads be done by the ISR in the background, so it 
will interleave with the execution of it. I don't think 
I'll be able to read the SPI at much more than 1Mbit/s. 
Maybe even less.

-- 
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