Troubleshooting PIC18F45J10 Wiring with PICKit2 Programmer

[El Moriana]

Hi,

I am attempting to wire a PIC18F45J10 to my PICKit 2 Programmer and I'm running into difficulties.

My PICKit2 is reporting a VPP and VDD Voltage level error. Troubleshooting it further tells me that I have a VDD short.

I have attached my wiring diagram along with the general wiring guideline that the datasheet provides. I cannot see anything wrong, but then again i am a newbie at this.

Any help would be greatly appreciated.

 

[lewando]

Not a PIC specialist, maybe someone else can add to this...
Anyway, a checklist of sorts:
Do you have the latest PICkit 2 version?
Is the PICkit 2 set up to provide power to your circuit?
Is your circuit exceeding the maximum current that the PICkit 2 can provide (25mA)?
You said you found a short--great! That's probably it then. Did you fix it?
Is the connection between the PICkit 2 and your circuit correct (connector not reversed)?
Just saw this: you have no current limiting resistors in series with your LEDs. Maybe that's not a problem for the PIC, during programming, when the I/O should be in a tri-state mode, but normally you should have some resistor value there--otherwise you operate at the the maximum port current Disconnect the LEDs to simplify the troubleshooting process.
Can you show a screenshot or two of your PICkit 2 setup?

 

[El Moriana]

Thanks for replying.

Going down the list:
I have the latest PICKit 2 version.
It is set up to provide power.
It is not exceeding 25mA. The PICKit 2 can fully support a PIC18F45J10 (according to PICKit 2 documentation and PIC datasheet).
The "VDD Short found" was a message from the PICKit 2 software. I cannot find the short, I have wired my PIC according to what the schematic shows and according to what I know, there shouldn't be a short.. as you say, this is probably the problem. But I can't find it..
The connector is plugged into the header correctly.
Yes I noticed this also, however it isn't an issue at the moment, I have temporarily disconnected the LEDs from the main circuit (including all connecting wires to make sure there wasnt a short there) until I can get the PICKit 2 to successfully pick up my PIC and communicate with it.
I don't have a camera atm, but will post pictures as soon as I am able.

 

[lewando]

Is it possible that the PIC pin 1 is not where it should be (PIC rotated 180)?
Can you power this from an external supply (no PICkit 2 pod attached) to see if the short is real?
Do you have another known good PIC circuit that you can use to verify the wellness of the PICkit 2?

 

[DeeNos]

Hello,

Thank you for reaching out for help with your PIC18F45J10 wiring issue. I understand the importance of precise and accurate wiring when it comes to working with microcontrollers.

From your description, it seems like you have followed the general wiring guideline provided in the datasheet. However, it is possible that there may be a small error or oversight in the wiring that is causing the VDD short.

I would recommend double-checking all of your connections and using a multimeter to ensure that there are no shorts or incorrect connections. It may also be helpful to consult with a more experienced individual or refer to online forums for troubleshooting tips specific to your setup.

Additionally, I would suggest checking the datasheet for any specific recommendations or requirements for wiring the PIC18F45J10 to a PICKit2 Programmer. Sometimes, there may be specific pins or settings that need to be adjusted for successful programming.

I hope this helps and that you are able to resolve your issue. Good luck with your project!