Problem with porta.5 on pic 16f873A

[santamaria]

I try many changes but i can't give high on porta.5 pin.all other pins are working as digital but porta.5 don't work.what i miss here can anyone help me?
I am using pic pasic pro ver 2.47 and my code is the following:

"
define osc 20

ADCON1=7
CMCON=7
TRISA=0
PORTA=0
TRISB=0
PORTB=0
SSPCON=0
porta.0=1
porta.1=1
porta.2=1
porta.3=1
porta.4=1
porta.5=1
end
"

[Archangel]

Without looking at the data sheet, my first guess would be that it has an open collector output and needs a pullup resistor as the result . . .Gotta love those data sheets.
Edit: Nope portA.4 is open drain. A.5 appears to be a standard I/O, maybe your PIC is damaged, maybe your breadboard is bad. Check the pin with your voltmeter directly on the pin itself.<br> http://www.kirlian-photography.com/video/PIC16F87XA.pdf

[Acetronics2]

Hi,

Could it be a short circuit between PortA.5 and Vss ... the next pin ???

just an idea ... and a very good reason not to reach "1" state !!!

Alain

[santamaria]

You are correct.I find the problem.I was short circuit between porta.5 and gnd from breadboard .the good is that pin is steel working.thanks acetronics and joe.s for your help.