ICDU40 worked for a few programmings, and then stopped

Guest · Posted: Mon Oct 06, 2008 9:46 pm

I have a dsPICdem 2 board and a ICDU40. I programmed both a 30f4011 and a 30f4013 successfully. The next day, I tried programming them again, and the ICDU40 could not find the target. Sometimes the diagnostic tool would report that Vdd is 0.03V, and other times it would read 4.98V. The board is properly powered, as the program still on both chips runs just fine. I've also tried powering from the ICDU40, but no change. I have noticed that CCS's documentation recommends a 47k pull up resistor from mclr to 5V, while the board has a 4.7k resistor. Could this be my problem? I would think that CCS would design its ICD to work with microchip's development boards.

Has anyone else had problems with the dspicdem 2 and icdu40?

Guest · Posted: Wed Oct 08, 2008 8:03 am

I tried a ICD2 and it works fine. Looks like the ICDU40 is going back.