PIC16F84A Reading input - Electronic Circuits Projects Diagrams Free

mouse9911 · 18th May 2007, 07:17 PM

Hey guys,
I was just wondering if anyone knew the specifications for reading data from the PORTB or PORTA pins on a PIC16F84A? I am fairly new at all this, and im not sure what voltage or what not i shoulld be sending to those pins not to damage them. I tried reading the datasheet for the device but its fairly complex for my understanding, i am going to keep and trying though. I want to be able to read an input from an external circuit.

ericgibbs · 18th May 2007, 07:22 PM

hi,
Assuming your PIC has a +5V supply, you should limit the inputs to between 0Volts and +5Volts.

This applies to both the digital and analog inputs.

Does this answer your Q.?

mouse9911 · 23rd May 2007, 03:15 AM

Hi, sorry for the late reply. Thanks that helped a lot. Got a regulator, but i think i burnt out my PIC chip before posting on here :S

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18th May 2007, 07:17 PM	#1
mouse9911	PIC16F84A Reading input Hey guys, I was just wondering if anyone knew the specifications for reading data from the PORTB or PORTA pins on a PIC16F84A? I am fairly new at all this, and im not sure what voltage or what not i shoulld be sending to those pins not to damage them. I tried reading the datasheet for the device but its fairly complex for my understanding, i am going to keep and trying though. I want to be able to read an input from an external circuit.

18th May 2007, 07:22 PM	#2
ericgibbs	hi, Assuming your PIC has a +5V supply, you should limit the inputs to between 0Volts and +5Volts. This applies to both the digital and analog inputs. Does this answer your Q.? __________________ Eric " Good enough is Perfect " I will NOT answer PM's requesting technical help, please use the Forum PIC tutorials: Nigel's www.winpicprog.co.uk/ Bill's: www.blueroomelectronics.com/

23rd May 2007, 03:15 AM	#3
mouse9911	Hi, sorry for the late reply. Thanks that helped a lot. Got a regulator, but i think i burnt out my PIC chip before posting on here :S