PIC16F628 Configuration Word

[Kingpin094]

What is the proer way to configre a PIC16F628 so that it is like a 16F84 but with an internal rc oscilator? I know that you have to turn the comparators off.

When you set the config word which setting should I use? What is the command the turns the internal oscillator on but does not change any of the other settings? I have looked through the datasheet and I see that there are 4 or 5 different ways to configure the chip to use the internal oscilator or to use an external. I have tried to configure the chip to use the internal osc. but the chip did not run.

Any light that could be shed on the subject would be much appreciated.

 

[Poors]

The way I do it in PIC Basic Pro is this:
cmcon = 7 'outputs digital.
@ device INTRC_OSC_NOCLKOUT, MCLR_OFF ' internal oscillator 4 MHz.
' MCLR_OFF means no need of external resistor. port can be used.

I am not a professional programmer, just for scale model trains and some funny stuff.

 

[Kingpin094]

I figured out my problem. For some reason I had Vcc and ground reversed on my bread board. Opps... Fortunatly the chip still seems to function properly.