Matt Bennett

Unfortunately, there is a very good reason why you don't see this very
often- the FVR isn't very 'F' - it can vary by as much as 5% on the PIC18
you mention, and by -8 to +6% on the 12LF1840- and these aren't errata-
these are the published and tested specs- they aren't very good
references- you would need to take into account the amount the reference
can vary over temperature and voltage.  I don't believe that the chart you
posted takes the variance into account

It is great to get a rough estimate, ... you may be able to calibrate each
part- if you want any kind of precision, you'll need to use an external
FVR.

Matt Bennett
Just outside of Austin, TX
30.51,-97.91

The views I express are my own, not that of my employer, a large
multinational corporation that you are familiar with.
-- http://www.piclist.com/techref/piclist  PIC/SX FAQ & list archive
View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist

In general, compilers are dealt with as an external application- I haven't
used CCS, I expect it to be similar- MPLAB X generates a command line,
runs it, and waits for it to return.  This was done intentionally- it
allows you to maintain different versions of the compiler without having
to do an installation cycle.

Matt Bennett
Just outside of Austin, TX
30.51,-97.91

The views I express are my own, not that of my employer, a large
multinational corporation that you are familiar with.

-- http://www.piclist.com/techref/piclist  PIC/SX FAQ & list archive
View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist

I'd strongly suggest some serious testing with your processor and SD card
of choice- unless you're tied into the SD IP (executed the license into
the SD Association, etc), you're running the SD card via the legacy SPI
interface, and that isn't super fast.

Probably more important, no matter the interface, writing to SD cards is
not deterministic, and there isn't a lot of headroom (buffer size) on the
PIC18 at the rate you're talking about (roughly 100KByte/s, if I read it
right). Yes, the rating on the card can be *much* higher than that, but
that is why I suggest testing extensively and using a trusted source-
things are not always what they seem, and there are definitely fraudulent
cards out there (I think this has been discussed pretty extensively here
on the piclist).

Good luck!

Matt Bennett
Just outside of Austin, TX
30.51,-97.91

The views I express are my own, not that of my employer, a large
multinational corporation that you are familiar with.
-- http://www.piclist.com/techref/piclist  PIC/SX FAQ & list archive
View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist