Question about MCLR pin with Pro40

[cubdh23]

Ok i know i have read many times that the reason for Verify Error X0000 is because it is not giving enough power to the MCLR pin. I just wanted to verify something myself before i go spend $10.00 on 2 9 volts batteries. I just want to make sure. When i turn VPP on and i test the MCLR pin, to see how many volts is there i get negative 8.0 volts. My power supply is 18Volts AC. I would think this is more than enough. I test the MCLR using the ground from the AC power supply and i get -8.0 volts.
Do i need to click on any of the fuses on the winpicprog? I assume everything is default for the 628 as said in Nigel's tutorial. If i must spend 10 dollars on 2 batteries i will. Do you think i should or am i doing something wrong? The -8.0 volts is kinda perlexing me.

 

[cubdh23]

OK silly me. It was not -8.0
IT says 13 Volts. This should be enough right?
Then what else could i be doing wrong?

 

[williB]

you can get 2 9V batteries at the local dollar store ..

 

[cubdh23]

LOL my bad, i already did get 2 9 volts about an hour ago. My friend told me it was 5 dollars each, but to my pleasant surprise its only $4.00 for 2
will try it now. Ok i tried using the batteries just now and it gave me the same error. Does this mean something is wrong with the chip? what other possible reasons? thanks

 

[williB]

refresh my memory please ..is the pro 40 a store bought programmer or home built..?

 

[cubdh23]

It is store bought. I think all the parts are in place on the programmer because it does give 13 Volts on MCLR and 5 Volts and 0 volts on the others.
I am wondering if i need to do anything differently on the winpicprog or what.
I have absolutely no idea what to do now.

 

[williB]

hang in there...
i know it can be frustrating...
the 13V you are getting on MCLR should be fine.-right in the middle of spec-

 

[Henrico]

Double check your cable,especially if it is home made.
Are you inserting the pic in the correct position ? REMEMBER, different devices are placed in different positions on the ZIF socket (or IC holder if you are using one)
The 18 & 20 pin devices are on the lower half,while 28 & 40 pin devices are placed in the top half.

Good Luck

 

[cubdh23]

Ok finnally i have fixed the damn problem.
I was browsing aimlessly around the forum and i found someone that said
in the hardware section they unchecked VDD, VPP, VPP40, invert options
and Checked the Output, Clock, and Input invert options.
Worked like a charm. Oh well i have 2 extra 9 volts battery, i have to find something for it to power

 

[Nigel Goodwin]

Ok finnally i have fixed the damn problem.
I was browsing aimlessly around the forum and i found someone that said
in the hardware section they unchecked VDD, VPP, VPP40, invert options
and Checked the Output, Clock, and Input invert options.
Worked like a charm. Oh well i have 2 extra 9 volts battery, i have to find something for it to power

The P16PRO40 can use a couple of different buffer chips, one inverts, and one doesn't - on the Hardware window in WinPicProg there's a pull-down menu to select either type, or you can select Custom and manually set the options.