W7500P ADC functionality

Question

Trying to get the W7500P ADC working. Can verify that the ADC clk is being generated by looking at Clk Monitor pin. Can set & read back ADC registers, but a conversion never starts or completes. I did program it out of power down mode. Data sheet V1.0.9 has a note that says all references to ADC are removed. Does that mean that the ADC hardware fuctionality has been disabled, including alternate pad function ( to be able to select analog ins )? Is there any way to activate the ADC? For my application not too worried about some crosstalkl. Would like to evaluate just how significant it is. Using ADC as an input voltage monitor detect. I have looked through the application code libs and my code is similar in structure.

Alan · Answer

Hello, Selectech Before discussing this, there is one situation to review. How many Channels does the ADC use?

Alan · Answer

Oh, I’m sorry for the late response. The problem with the ADC on the W7500 is that if you use more than two channels, going above a certain speed will affect other channels. There are no other problems. There’s nothing wrong with one channel.

miarossi · Answer

Hello, To activate the ADC, first, confirm that the ADC clock signal is correctly generated and monitor the Monitor pin for verification. Note that references to ADC functionality have been removed, suggesting potential disablement of ADC hardware, including alternate pad function selection for analog inputs. Your code to activate the ADC and tolerate potential crosstalk, considering its impact on your voltage monitoring application.