Problems detecting / programming PIC18F67J10

JBM · Joined: 12 May 2004 Posts: 54 Location: edinburgh, Scotland

I've made up a board with an 18F67J10 on it, but the ICD doesn't recognise it.
The conections are
B7 -> B7 programming pin
B6 -> B6 programming PIN
0V -> 0V
Mclr -> MCLR pin

My target Vdd is running at 3.3V, not 5V.

Additionally, the ENVREG is pulled up to Vdd, and Vcap is connected to ground through a 10uF cap.

I'm using a ICD-U40 (firmware version 1.39) and V2.48 of the windows software.

The message I (usually) get is:
Unknown PIC18 device, ID: 0101 if this is a valid id, then makre sure the algorithm inside chipedit is set correctly.

Obviously i'm missing something - any ideas people?
thanks
-JBM

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

I don't see it in the list of supported devices:
http://www.ccsinfo.com/icddevices.shtml

JBM · Joined: 12 May 2004 Posts: 54 Location: edinburgh, Scotland

True, it isn't there, however going into the advanced menu , and clicking on the devices drop-down box it is in there.

But, that list does look remarkably similar to the "supported devices" list.

oop.

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OK, supposing the ICD-U40 isn't going to make it happen, do i need an ICD2 or somesuch?
P.S. Thanks for the quick reply PCM Programmer - i'm still at the bench tearing y hair out!

P.P.S.
That was the problem - PCM , you really are too good. I pulled ENVREG high, and put in an 18LF6720. It'll do for now, but i've had to drop my clock freguency from 40 to 20MHz.

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

My advice is to contact CCS support and verify that the chip is really
supported.