Not applicable
Sep 14, 2017
03:10 AM
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Sep 14, 2017
03:10 AM
Hi all,
I am using my XMC1400 board with VDD set to 3.3 V. For certain measurements I need a range from 0-5 V in a certain VADC channel. Is it possible to set the input range from 0 to 5V without changing VDD to 5V?
Thank you
I am using my XMC1400 board with VDD set to 3.3 V. For certain measurements I need a range from 0-5 V in a certain VADC channel. Is it possible to set the input range from 0 to 5V without changing VDD to 5V?
Thank you
- Tags:
- IFX
3 Replies
Sep 14, 2017
08:38 AM
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Sep 14, 2017
08:38 AM
Whether you use 3.3V or 5V for the VDD, the Vref is always 5V. But you need to set the VDD range.
Not applicable
Sep 15, 2017
01:30 AM
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Sep 15, 2017
01:30 AM
Thank you
However, is it possible to use Vref = 5V as a reference to the VADC module with VDD set to 3 V?
However, is it possible to use Vref = 5V as a reference to the VADC module with VDD set to 3 V?
Sep 15, 2017
10:24 AM
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Sep 15, 2017
10:24 AM
You didn't understand my reply.
The Vref is always 5V if you use the internal reference, but you need to set the SHSCFG register according to your VDD suply.
The Vref is always 5V if you use the internal reference, but you need to set the SHSCFG register according to your VDD suply.