Topic : Target CPU is not powered VCC measure : 0 mV

Forum : ST7/STM8

Original Post
Post Information Post
June 12, 2009 - 10:12pm
Guest

Hi,

I am debugging a code using Raisonance Rlink v2.01 hardware debugger. I get following error
when I connect a daughter baord (board designed by the company I work for).

Target CPU is not powered.
VCC_Targ check failed.
VCC measure : 0 mV

The daughter board has 3.3V dc supply and ST7FLITE35 microcontroller.

What could be causing this error. Is there a way to fix this problem.

Thanks,
NTA
Replies
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June 23, 2009 - 12:35pm
Guest

Target Vcc is measured by RLink on the 10-pin connector. The message means that the connection is probably missing...
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June 23, 2009 - 4:41pm
Guest

Hi Francis,

I am using a board manufactured by a different vendor which works with 3.3 V (3.314 V to be exact voltmeter reading). I don't have a REva Rlink motherboard. When I measure the Pin 7 of the ICC connector under Rlink PCB, I get a voltage of 3.288 V. I also checked the connectivity using voltmeter and everything looks fine.

NTA