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two UCD9081 on a single board

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on Nov 05 2009 02:17 AM

Hi,

We're using two UCD9081 devices on a single power management board for sequencing and monitoring different supplies. Let us know how to program both these devices using a single communication. Our GUI is able to talk to only one of these devices at a time. If both are connected, the communication fails

Thanks and regards,

Srivatsa

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Posted by BrandonAzbell

on Nov 05 2009 10:35 AM

Guru54910 points

Would you explain your setup in more detail? I can make some assumptions about it, but would rather understand it fully. Both from a hardware implementation perspective and your use of the GUI.

From what I recall, the GUI only has the capability of configuring parameters for 1 UCD9081 at a time. But you should be able to switch between which device you talk to based on the unique I2C device address. I assume the two UCD9081s have a unique I2C device address setup via resistor strap options.

Brandon

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