KansaiRobot
Member
Hello everybody
I would like to ask a question about the oscillator in a PIC18F2550.
I have a board in which the pin 9 and 10 are already connected to a crystal of 20 MHz connected to ground through two caps of 22 pF.
Is this an External oscillator??
when in a program we refer to an "internal" oscillator" does this refer to a oscillator "inside" the microcontroller???
if we put "clock to be derived from the internal oscillator (as in #pragma config FOSC=INTOSCIO_EC
or CONFIG FOSC=INTOSCIO_EC)
what are we refering to???
Does the microcontroller have an oscillator "inside"???
Does the oscilator I see in the circuit of my board is an "external oscillator"??
if yes, which should I use??
thank you very much for all the help you can give me
Kansai
I would like to ask a question about the oscillator in a PIC18F2550.
I have a board in which the pin 9 and 10 are already connected to a crystal of 20 MHz connected to ground through two caps of 22 pF.
Is this an External oscillator??
when in a program we refer to an "internal" oscillator" does this refer to a oscillator "inside" the microcontroller???
if we put "clock to be derived from the internal oscillator (as in #pragma config FOSC=INTOSCIO_EC
or CONFIG FOSC=INTOSCIO_EC)
what are we refering to???
Does the microcontroller have an oscillator "inside"???
Does the oscilator I see in the circuit of my board is an "external oscillator"??
if yes, which should I use??
thank you very much for all the help you can give me
Kansai