At 07:31 PM 12/30/2007, you wrote:
>I was just looking through the product list on the microchip site and
>came across the PIC24FJ16GA002...
>
>This looks like a really interesting 16 bit part.
>
>The interesting part is that it is only slighty more expensive than the
>16F886 which I use extensively, but of course has limits.
>
>Most of the things I'm using the '886 for work perfectly well in it -
>however, they of course would be easier to deal with in the PIC24 line
>since things like 32 bit counters mean I don't have to deal with writing
>code to deal with counter overflows as often, etc.
>
>I am a bit confused about a few things... In the 8 bit pic world, the
>program memory is specififed in words, which is a really good measure of
>program code size...  I can't seem to find any similar information on
>the PIC24...  That is, is 16Kbytes on the PIC24 similar to 8KWords on
>the PIC16.
>
>I note the PIC24 is 3.3V only, which is not a problem - my designs are
>slowly ending up 3.3V anyways.
>
>What I'm trying to figure out is what exactly (if anything) I am giving
>up if I move to the PIC24 part listed in the subject..
>
>-forrest

The "J" parts have no data EEPROM, presumably due to a process
incompatibility, but in many cases you can easily add an external serial
(SPI, I2C or Microwire) EEPROM if NV storage is required. Available pins
might be an issue on such a small package.

The 5V units (eg. PIC30) are generally regarded as being more "bulletproof",
or at least that's what I hear from Microchip's engineers.

>Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com



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