In Technical Reference Manual, it says that when -VERFHI < (ADCINyP-ADCINyN) < VERFHI, the result would be 65535 * ((ADCINyP-ADCINyN+VREFHI)/(2 * VREFHI)).
But what is the range of ADCINyP or ADCINyN? I can't find the differential input range of ADC.
Can I apply a negtive voltage on ADCINyP?