Pic Controller reference Voltages.......

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well i have no idea of VREF-(low voltage reference) and VREF+ (High voltage reference) in PIC18F452 Controller..... may someone know about it... then kindly guide me...
 

hi

vref+ is used for reference of the controller. if we use vref- the pin will be ground.
 

Have a look at this tutorial:
http://www.winpicprog.co.uk/pic_tutorial11.htm

The VREF+ and VREF- inputs are used as the voltage reference inputs for the Analog to Digital converter.


i have an circuit in which the reference is attach with Vref- ... my question is that why we don't use vref + ??? may you please guide me...
 

please post your circuit.


well i didn;t find the attachment option in this forum(edaboard) ... may you please tell you how i attach my circuit file in proteus here.. that you might help out me....
 

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