I take my last message back. I just read the top of it and it looked
like my post. Thought something went wrong somewhere :)
Sorry.....................
Mounir
--- In Electronics_101@y..., aseesf4@a... wrote:
How do you compare the PIC17 family to the PIC18 family? I only
used PIC17
once before PIC18 was introduced. But on my current project I was
comparing
PIC17 and PIC18. I honestly couldn't find any reason why Microchip
still made
the PIC17 series. PIC18 is way better and about the same price.
Am I missing something ? Do you have good experience with PIC17?
When we started this project I had intended to use separate PWM
outputs to
each of the three phases of the motor, therefore I needed three PWM
outputs.
The PIC17C756A was the best choice available with 3 PWM outputs.
Later,
changes were made to the motor and controller and I no longer
needed separate
PWM outputs. If I had known this earlier I would have used a PIC18
series
chip.
The PIC17 series was the next logical step for Microchip to take at
the time
they developed it. I believe it was just a step along the way to
the PIC18.
Microchip still supports this family, even though the PIC18 is a
much better
choice if you need more power than the PIC16 which is much cheaper,
because
of their policy of whenever possible always supporting past lines.
They do
this to prove to their potential customers that they will not be
hung out to
dry because of discontinued or obsoleted parts.
