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18f452 Programming Failure

 
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frankdai



Joined: 07 Feb 2006
Posts: 1

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18f452 Programming Failure
PostPosted: Tue Feb 07, 2006 7:32 pm     Reply with quote
I'm prototyping with a 18f452 on a solderless breadboard, but the ICD2 never recognizes the PIC chip("cannot validate target device").

ICD2 passes the self test, I'm providing power to all of the Gnd/Vdd pins, and I've provided an external clock source of 4MHz through a function generator.

Are there any gotchas you guys can think of? Any help is greatly appreciated.
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Wed Feb 08, 2006 9:46 am     Reply with quote
I guess you're getting this warning message:
Quote:
ICDWarn0052: MPLAB ICD 2 cannot validate a target device.


You should read the help file inside MPLAB, which says this:
Quote:
The target device may be unplugged from the board, or not powered.


For more help, go to the Microchip ICD2 forum. This is an entire forum
completely about solving ICD2 problems:
http://forum.microchip.com/tt.aspx?forumid=49

Also, use the search engine on that forum:
http://forum.microchip.com/search.aspx

On the right side of the Search engine page, select:
MPLAB ICD 2 (In circuit Debugger)

Then in the Search Term box, put in this: ICDWarn0052

Then click the OK button. You'll get 15 hits of people talking about
the problem you have. Most of them offer solutions.
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