Hi!.
Just a few notes...

Philip Pemberton wrote :

> Hi,
> I've just managed to fill up the data RAM on my PIC16F628.

16F648 or 16F88 ?
No, that would be to simple, right :-) :-)


> Now, according
> to Microchip, almost all the higher end (i.e. gobs of data and program
> memory) chips belong to the 18F series. Sooo.. Does anyone
> know if there's a quick tutorial that explains what has changed and how to
> change 16F code to work on an 18F? Failing that, does anyone know if a
> "PIC18F from-the-ground-up"-type tutorial exists?
> Now to the question that's probably going to get me
> severely flamed: Can anyone suggest a PIC18F series chip to start
> with? Should I jump in at the deep end (so to speak) and buy one of the
> 40-pin PIC18Fs, or should I get one of the 18- or 28-pin PIC18F chips
> instead?

One thing about the 18-chips, is that, generaly, there are much less
diffrence in features between the "entry-level" and the "high-end"
in the 18-serie then in the 16-serie. I think every (?)
18-chip has ADC, UART and I2C. And the same timers, I think.
(Not counting "motor" and "CAN" variants", of course...)

You have to decide between the "old" 18 series pics and
the newer (NanoWatt, EUSART) pics.

The main differences is in amount of flash/ram and I/O pins.

Jan-Erik.

PS.
I have a bunch of different 18F-pics if you're interested. Mail
be privetly at: jan-erik dot soderholm at telia dot com, and
we'll make up someting if you just need a few.
18F4320
18F452
18F442
18F252

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