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PSoC Creator & Designer Software

RiTa_288331
New Contributor II

For the SAR ADC example, where an ADC is used with an analog input pin, just a simple question:

   

Why do we have to assign a physical pin to both the ADC and the analog input pin?  Doesn't the ADC "not" need a pin, because we are connecting it to the analog pin?  It would seem to me that the connection between the ADC and the pin would be internal...

   

-RT

   

 

   

Edit: just for clarity sake, here's what the lab 4 manual says:

   

map the “ADC_SAR_Seq_1:Bypass” pin to P1[7], and “Pin_1” to P2[0]

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Bob_Marlowe
Expert II

The "Bypass" pin together with a capacitor of ~1µF stabilizes the internal reference voltage. The analog input pin for the ADC is (within limits) to be chosen freely.

   

 

   

Bob

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Bob_Marlowe
Expert II

The "Bypass" pin together with a capacitor of ~1µF stabilizes the internal reference voltage. The analog input pin for the ADC is (within limits) to be chosen freely.

   

 

   

Bob

View solution in original post

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