ADC in S32K324

[hemanths]

Hi,

In S32K324, I came to know that there are 72 ADC Channels (Standard & Precision) from the reference manual. I am attaching the screenshot of the relevant part. 

In the signal table excel of S32K324, I can see some ADC are assigned to two different pins. For example in the below mentioned screenshot ADC0_S9 is there in both J17 and B14.

So Can I use these J17 and B14 for two different analog inputs?

[hemanths]

Hi Robin,

Thanks for your explanation.

I have one more doubt. What is the difference between ADC_X & ADC_MA? 

From this sheet, I came to know that it is input & output. Can you please explain a bit more about ADC_X & ADC_MA. 

[Robin_Shen · Accepted solution]

Hi hemanths,

Please read "59.1.7 ADC mux-mode channels" of S32K3XXRM: 
There are some channels in ADC which are driven by multiple pads. For this, GPR bits from DCM are used to define which pad is connected to a particular ADC channel.

You may need to modify the value of the register before sampling to reselect the corresponding pin.

If you are using S32K3 RTD, please also note the information mentioned in this post: S32K3_ADC_Channcal_configure_problem

Best Regards,
Robin
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