32.2.6 Auto-Conversion Trigger

The auto-conversion trigger allows periodic ADC measurements without software intervention. When a rising edge of the selected source occurs, the ADGO bit is set by hardware.

The auto-conversion trigger source is selected with the ADACT bits.

Using the auto-conversion trigger does not assure proper ADC timing. It is the user’s responsibility to ensure that the ADC timing requirements are met. See the following table for auto-conversion sources.

Table 32-3. ADC Auto-Conversion Trigger Sources
ADACTAuto-conversioin Trigger Source
11111Software write to ADPCH
11110Reserved, do not use
11101Software read of ADRESH
11100Software read of ADERRH
10000 to 11011Reserved, do not use
01111Interrupt-on-change Interrupt Flag
01110C2_out
01101C1_out
01100PWM4_out
01011PWM3_out
01010CCP2_trigger
01001CCP1_trigger
01000TMR6_postscaled
00111TMR5_overflow
00110TMR4_postscaled
00101TMR3_overflow
00100TMR2_postscaled
00011TMR1_overflow
00010TMR0_overflow
00001Pin selected by ADACTPPS
00000External Trigger Disabled