Basic PIC Circuit

[baberjaved]

I have been working with 8051 and PIC controllers for quite a while now but it has happened to me many times that when i connect the microcontroller on a breadboard it either doesn't work sometimes for no apparent reason or it gets fried although i seem to use the same circuit.Can any one anticipate the reason behind this?
and Can someone kindly draw me just the basic circuit required to get the PIC running (just the basic please) without any extras.
Is it mandatory to connect the MCLR pins to Vdd and so on?
Also does the values of the caps connected create a difference?

Thanks in advance!

 

[Nigel Goodwin]

Check my tutorials for the basic minimum circuit for a PIC, but if you're frying PIC's you're doing something SERIOUSLY wrong, they are extremely hardly devices.

I would suggest you don't use breadboards though (I never do), they aren't very reliable, and are very prone to problems.

 

[sachin.kolkar]

dear friends,
i have problem when i am using microcontrller for AC switching application, out put of the mcu to the relay . when spike generated in ac ckt while relay operating, then the out put of the other or same pin of mcu going to change

 

[baberjaved]

Didn't understand your point... Can you ellaborate?

 

[bananasiong]

Is the spike created by the AC source or the relay? Do you have a protection diode for the relay?