Tue Jul 31 17:23:08 EDT 2012
For an electronics project I want the cheapest possible 18F chip that
can be used with Staapl. I'm thinking to go for a 2-chip solution:
one programmer/hub with USB and and one or more slave chips.
At volume pricing, the 18F13K22 is current the cheapest at $1.16 
PDIP low volume is $2.30
The 18F1220 volume is $1.96 with low volume PDIP at $2.44
So for low volume it doesn't make much difference, though the 13K22
is faster (16Mhz intosc up to 16 MIPS / 64MHz).