22 Apr
2012
22 Apr
'12
8:23 p.m.
> > Why not the SD card? Cheaper, smaller and
easy to interface! :)
>
> My gut feeling is that compact flash will live a little longer in
> terms of being able to get interface hardware a decade into the future.
> But I could be wrong and SD might have more legs (certainly fewer
> contacts). And as you point out the serial interface to a SD card is
> very straightforward so I think you have a good point!
As far as I know, both CF and SD cards are docuemtned.
The only custom
interfce hardware is the connectors ;-). Although it might be slow, there's
nothign to stop you talkign to an SD card by bit-banging the signals on
the I/O pins of any microcotroller, computer, or whatever.
So I see no reason why you won't be able to
read/write SD cards in 10
years time.
My analogy is that Compact Flash are like U--matic videotapes and that SD is like VHS
tapes.
SD gets most of the consumer uses, but the consumer product lifespan is very short.
The CF applications today are mostly industrial uses with lifespans measured in a decade
or more.
That's why my gut feeling is to favor CF for long legs.
Tim.