619
20.1.3
Input Pins
Table 20.1 summarizes the A/D converter’s input pins. The eight analog input pins are divided
into two groups: group 0 (AN0 to AN3), and group 1 (AN4 to AN7). AV
CC
and AV
SS
are the
power supply inputs for the analog circuits in the A/D converter. AVcc also functions as the A/D
converter reference voltage pin.
Table 20.1 A/D Converter Pins
Pin Name
Abbreviation
I/O
Function
Analog power supply pin
AVcc
Input
Analog power supply
Analog ground pin
AVss
Input
Analog ground and reference voltage
Analog input pin 0
AN0
Input
Group 0 analog inputs
Analog input pin 1
AN1
Input
Analog input pin 2
AN2
Input
Analog input pin 3
AN3
Input
Analog input pin 4
AN4
Input
Group1 analog inputs
Analog input pin 5
AN5
Input
Analog input pin 6
AN6
Input
Analog input pin 7
AN7
Input
A/D external trigger input
pin
ADTRG
Input
External trigger input for starting A/D
conversion
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