Search FAQs on the left to see if your question has been answered. Click on the dropdown to view all of the documents associated with the product. If you can't find your question, click on Ask a Question

ADUCM360/361: Configuring unused ADC inputs

I have some unused ADC inputs and GPIO pins that are not used in my design. 
How should I
configure these pins to minimize current consumption?


ADC inputs - tie these directly to ground. The leakage current on the analog
pins is low –
typically 1nA.  The digital pins have an internal pull-up to IOVDD. This
pull-up is typically 50Kohms. Because of the pull-ups, these pins can be left
unconnected. Another option is to tie them externally to IOVDD to minimize the
current flowing through the pull-up.