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kevcon
Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA
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| PIC24 and PCD designs |
 Posted: Thu Jul 26, 2007 7:27 am |
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Is anyone looking at or has done a design with a PIC24?
I'm looking for a bit more horsepower and functionality than the PIC18’s and I'm wondering if you found it was worth the transition.
Kevin |
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libor
Joined: 14 Dec 2004
Posts: 288
Location: Hungary
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| Posted: Fri Jul 27, 2007 10:41 am |
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Let's bring this topic up:
I am very much 'looking at'. ...though I am also looking at learning the DSP capabilities of the PIC30, 33 series. |
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Laurent Chouinard
Joined: 12 Sep 2003
Posts: 43
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| Posted: Fri Jul 27, 2007 10:45 am |
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| kevcon: I am looking at it, but may move to Freescale's Coldfire v2 series due to lack of a compiler for pic24. (I have yet to evaluate the available compilers for coldfire, as I may be just as disappointed. We're spoiled here with CCS, although I suspect CodeWarrior to be in the same level of tightly integrated peripheral routines) |
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kevcon
Joined: 21 Feb 2007
Posts: 142
Location: Michigan, USA
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| Posted: Mon Jul 30, 2007 7:35 am |
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I’ve used Code Warrior tools for Freescale parts before and they are awesome. They can be a bit pricey though, which makes for a tough sale to the big boss on a low volume / low cost product.  |
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Laurent Chouinard
Joined: 12 Sep 2003
Posts: 43
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| Posted: Mon Jul 30, 2007 7:48 am |
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| kevcon: That is exactly why I'm using CCS at the moment. Great product at a very low cost. |
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SET
Joined: 15 Nov 2005
Posts: 161
Location: Glasgow, UK
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| Posted: Mon Jul 30, 2007 9:01 am |
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CCS have just announced support for PIC24.
Two things against the PIC24/33 - power consumption (I think the smaller geometry parts are better though), and as far as I can see no external memory bus - RAM space is often a problem rather than Flash. |
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Laurent Chouinard
Joined: 12 Sep 2003
Posts: 43
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| Posted: Mon Jul 30, 2007 9:06 am |
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| SET: In my case, flash is a big limitation. I've hit the ceiling of my 128KB flash PIC, and the biggest pics they make are 256KB of flash, either in PIC24, PIC30 or PIC33... |
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libor
Joined: 14 Dec 2004
Posts: 288
Location: Hungary
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| Posted: Mon Jul 30, 2007 9:46 am |
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| Laurent Chouinard wrote: | | I've hit the ceiling of my 128KB flash PIC |
There's an external memory interface for up to 2 Mbytes of external code or data on the 18F8xxxx series: AN869 application note. I've never used it, but you might want to have a look at it. |
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Laurent Chouinard
Joined: 12 Sep 2003
Posts: 43
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| Posted: Mon Jul 30, 2007 9:51 am |
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libor: Maybe, but generally I tend to avoid external ram or rom and it complicates things unnecessarily (emulator support? external flashing from ICSP? etc)
Instead of upgrading my platform with external ROM, I'd rather upgrade my platform for something more powerful. |
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bwhiten
Joined: 26 Nov 2003
Posts: 151
Location: Grayson, GA
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| Stirring this up again |
| Posted: Thu Aug 09, 2007 7:24 pm |
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| Any updates on PIC24 compile issues? Anyone using PCD successfully? |
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