The much maligned 18F1320 has 18 pins, an AUSART but unfortunately
no SPI.  Bear in mind that this is only a 4 MHz chip (as yet; while it is
spec'ed to be a 40 MHz, the errata and many gray hairs on Olin's head
can attest to the need to keep the speed below 4 MHz), so if you need
more speed, you'll need more pins.

Sigh.  I could wish there were more low pin count 18F's.  I'd even like
to see an 8 pin, but I don't know that the umpf the 16-bit core brings
would be required too often for projects that only need an 8-pin chip.

Mike H.

>I've also moved most of my stuff to 18F chips, but there's an application
>I'm working on now where I really don't need very many pins (I'm using
>external serial peripherals), but I'd like a fair amount of RAM and ROM.
>The smallest 18F I see is about 28 pins, and I get to pay for those pins
>whether I use them or not. So, are there any low pin count 18F chips I'm
>missing? I need at least one UART (two would be nice, but I could bit bang
>one), an SPI, but no A/D. Seems like 8 I/O lines would do it. Another
>consideration is I have a C compiler for 18F, but not for 16F. However, I
>don't want to build a per unit cost into the design just to save the cost
>of another compiler. I COULD write it in ASM, but C is spoiling me...
>
>Harold
>
>
> > Dom wrote...
> >
> >>I've finally done it - I ordered some sample 18F442 pics from Microchip
> >> and
> >>thought I'd start to move away from the 16F series.
> >
> > [...]
> >
> >>Does anyone know of any gotchas for moving from 16F to 18F processors ?
> >> I'm
> >>sure I'll hit a few in the not too distant future but any advance
>warning
> >> of
> >>what to expect would be appreciated.
> >
> > I switched over to the PIC18Fxx2 series for all my hobby stuff
> > about a year ago; I find them a **LOT** easier to work with.  So
> > far I haven't encountered any problems with them other than what
> > is documented in the various errata documents.
> >
> > Dave D.
> >
> > --
> > http://www.piclist.com hint: The PICList is archived three different
> > ways.  See http://www.piclist.com/#archives for details.
> >
>
>
>--
>FCC Rules Online at http://www.hallikainen.com/FccRules/
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.

_________________________________________________________________
Tired of slow downloads and busy signals?  Get a high-speed Internet
connection! Comparison-shop your local high-speed providers here.
https://broadband.msn.com

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.