252 or 2520

[dsicon]

Hi
trying to pick a PIC
i need 28 pins and low power as in 'L'
so far i have narrowed to
PIC18LF252
or
PIC18LF2520
what are the advantages of the 2520 over the 252 ?
pkg to be SO28
need 4 A/D
any other candidates out there ?

[jblackann]

Have you checked Microchip's site? There is a parametric search that you can use that will list all of the different features that each micro has to offer.

[paul borgmeier]

From Microchip website

18F252
Not Recommended for new design
Please consider using device PIC18F2520

If you are not planning to make your device in the future, then either option will work. If you are going to make them in the future, the 18F252 might not be around and you will have to migrate to the 18F2520.

Paul Borgmeier
Salt Lake City, Utah
USA

[Bruce]

I've used the 252 for a long time, and it's nice. The 2520 has a boat-load of problems. You might want to take a look at the latest errata sheet for the 2520 before committing to that one.

If you can live with the problems/work arounds shown in the errata sheet, then go with the 2520. If not, you might want to shop around for a similar 18F series without a 16 page errata sheet..;o}

[dsicon]

Yikes !
bruce
this is pretty scary (errata)
have they respun the chip yet ?
any major issues to note?

the MEL parametic PIC picker is pretty nice

[Bruce]

I'm not sure what silicon revision they're up to yet on this part, but it's worth looking into if you plan on using one. That is indeed a hefty bug list for the 2520.