ICD don't work at 1.8V

doubleE · Joined: 15 Oct 2008 Posts: 7

Need help.. I'm working on a PIC18F45K20 at 1.8V and my ICD cannot recognize the device at that voltage. Are the ICD-U40 designed to work at that voltage? I can get it to work at 2.02V, but I can't be developing at that voltage.

Thanks,

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

This news release for the ICD-U40 lists the lowest voltage as 2.0 volts
for the Rev. 5 unit:
https://www.ccsinfo.com/newsdesk_info.php?newsPath=ALL&newsdesk_id=65
What's the revision level of your ICD ?

The Microchip ICD2 is also specified at 2.0 volts minimum:
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en010046

You previously got an answer here from FvM (same as my answer).
I don't know if you saw it:
http://www.ccsinfo.com/forum/viewtopic.php?t=37401

My suggestion is to build a version of your board that runs at 2.0 volts
and debug it. In other words, install a 2.0 volt regulator, and use IC's
that will run at 2.0 volts, in order to complete your development.
Then ship the final product at 1.8 volts (after testing).

doubleE · Joined: 15 Oct 2008 Posts: 7