Greetings,

This seem to be interesting, replacing the timer with pic. i have an
application that uses LMC555CM for the moment. I would like to replace it
with pic (since so many of you suggested so :) What concern here is, will the
pic square wave be driven rail to rail with 3 V Vdd ??



> Other posters are probably right that an 8-pin PIC is more elegant, but
> you will spend a significant amount of time writing a program and
> programming the chips.  And if you don't care much about accuracy, the
> 555 (including caps and resistors) is still way cheaper than a PIC,
> unless someone found PIC's at around $0.60 in single piece quantity,
> $0.20 in volume.  The LM555C is $0.42@1, $0.18@100 pcs from Digi-Key.  No
> PIC that I've ever heard of can even touch these prices.  The only way a
> PIC can compete is if your accuracy requirements dictate a very expensive
> capacitor, but not better than the PIC internal RC oscillator.

using a pic over 555 will surely save more space. but how will the pricing
fare?? is it more expansive ?


regards,
ckchan