409
14.1.3 Configuration of Input Pins
Table 14.1 lists input pins for the A/D converter. The eight analog input pins are grouped into two
sets. Group 0 comprises analog input pins 0–3 (AN
0
–AN
3
) and group 1 comprises pins 4–7 (AN
4
–
AN
7
). Pins AV
CC
and AV
SS
are the power supply pins for the analog circuits of the A/D
converter. AV
ref
is the analog reference voltage for A/D conversion.
Table 14.1 Input Pins
Pin Name Abbreviation I/O Function
Analog supply voltage AV
CC
I Power supply for the analog circuits
Analog ground AV
SS
I Ground and reference voltage for the analog
circuits
Analog reference
power supply
AV
ref
I Reference voltage for the analog circuits
Analog input 0 AN0 I Analog input pins, group 0
Analog input 1 AN1 I
Analog input 2 AN2 I
Analog input 3 AN3 I
Analog input 4 AN4 I Analog input pins, group 1
Analog input 5 AN5 I
Analog input 6 AN6 I
Analog input 7 AN7 I
A/D conversion trigger
input
ADTRG I A/D conversion start external trigger input