FYI:
----

No need to be alarmed, but I just did not think this would happen this soon
to my good "friend" in the PIC18 family -- the PIC18F452:

The following PIC18 PICmicros have been labeled "mature" by Microchip, and
as such, are not recommended for new designs:

PIC18F242
PIC18F252
PIC18F442
PIC18F452  <=== My buddy! :(


Like I said, there is no reason to be alarmed; they obviously will not
disappear overnight if Microchip's past practices are followed for these
parts. Microchip recommends the following as the 'Recommended Design-In
Device' replacements:

MATURE             REPLACEMENT
------             -----------

PIC18F242   ===>   PIC18F2420
PIC18F252   ===>   PIC18F2520
PIC18F442   ===>   PIC18F4420
PIC18F452   ===>   PIC18F4520


Actually, this is not a bad deal since the new parts have more features and
*might* even be cheaper. My hope is that the errata issues of the
replacement parts are fewer and less severe than the mature products they
are replacing. I'll look into this.

I used to recommend the PIC18F452 as a good PIC18F workhorse for beginners
wanted to delve into the PIC18 architecture -- especially those migrating
from a PIC16F877A. I guess my new recommendation is the PIC18F4520 (when it
is available through the distributors, that is).

Best regards,

Ken Pergola









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