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Hi mpgmike
thank you very much on your suggestions and explanations.
Have a nice time

Here are what I did according to Ioannis sugestion:
In Config word:
__config _CONFIG1, _FEXTOSC_OFF & _RSTOSC_HFINT32 & _CLKOUTEN_OFF & _CSWEN_ON & _FCMEN_ON

;HFINTOSC with OSCFRQ= 32 MHz and...

Hi Ioannis
thank you very much, it works !

Anyone can help about how to realize to make 16F15355 work correctly with Internal Oscillator on 4MHz clock frequency.
How to adjust config 1 – 5 and other registers to realize that.
Here is a...

Dear Alain
thank you very much on your support

Hi Henrik
Thank you very much on concise elaboration of the all aspects of this little project.
Shall try to work it out.

By the way - may be you have knowledge where to find Melanie's document...

Hi Henrik
have just measured rise time - it is 2,5uSec (0 to 5 V positive edge) - with no distorsion on positive egde.
signal under consideration - Quadrature signal, frequency = 30 KHz.
Thank...

Hi Henrik
thank you very much on your suggestion.
Shall try the way you suggested.
Mike

8057Hi Henrik
Thank you very much on your kind reply.
First – I am new in PBP programing and PIC use.
Here is what I am trying to work out.
I shold like to measure or detect the rising edge...

I should like to use both analog comparators on the 16F628A
I would like to compare a voltage (that ranges from 3 to 0 VDC relative to ground) to the internal voltage reference set to 0.5V. If...