https://community.nxp.com/t5/Kinetis-Microcontrollers/MKM35-ADC-and-internal-reference/m-p/1833165#M66192 <P>I am trying to use the internal reference with the ADC. &nbsp;I am trying the code on a TWR-KM35Z75M board the rule out a hardware problem. &nbsp;I modified the demo twrkm35z75m_adc16_interrupt to enable VREF. &nbsp;The voltage reads 1.2 VDC on the Vref pin, but I get a full scale AD reading at around 0.6VDC on the input. The result is correct if I use Vdda for reference.&nbsp;</P> Thu, 21 Mar 2024 19:12:32 GMT dporada 2024-03-21T19:12:32Z https://community.nxp.com/t5/Kinetis-Microcontrollers/MKM35-ADC-and-internal-reference/m-p/1833165#M66192 <P>I am trying to use the internal reference with the ADC. &nbsp;I am trying the code on a TWR-KM35Z75M board the rule out a hardware problem. &nbsp;I modified the demo twrkm35z75m_adc16_interrupt to enable VREF. &nbsp;The voltage reads 1.2 VDC on the Vref pin, but I get a full scale AD reading at around 0.6VDC on the input. The result is correct if I use Vdda for reference.&nbsp;</P> Thu, 21 Mar 2024 19:12:32 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MKM35-ADC-and-internal-reference/m-p/1833165#M66192 dporada 2024-03-21T19:12:32Z https://community.nxp.com/t5/Kinetis-Microcontrollers/MKM35-ADC-and-internal-reference/m-p/1833167#M66193 <P>I found the problem. &nbsp;I was using the 10 configuration of&nbsp;<SPAN>REFSEL, but it gives me the correct reading if I use the 01 configuration.</SPAN></P> Thu, 21 Mar 2024 19:23:00 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MKM35-ADC-and-internal-reference/m-p/1833167#M66193 dporada 2024-03-21T19:23:00Z