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Rev. 1.00, 05/04, page 415 of 544
16.2 Input/Output Pins
Table 16.1 summarizes the pins used by the A/D converter. The 6 analog input pins are divided
into two groups consisting of four channels and two channels. Analog input pins 0 to 3 (AN0 to
AN3) comprising group 0 and analog input pins 4 and 5 (AN4 and AN5) comprising group 1. The
AVcc and AVss pins are the power supply pins for the analog block in the A/D converter.
Table 16.1 Pin Configuration
Pin Name Symbol I/O Function
Analog power supply pin AV
CC
Input Analog block power supply and
reference voltage
Analog ground pin AV
SS
Input Analog block ground and reference
voltage
Reference power supply pin AVref Input Reference voltage for A/D conversion
Analog input pin 0 AN0 Input
Analog input pin 1 AN1 Input
Analog input pin 2 AN2 Input
Analog input pin 3 AN3 Input
Group 0 analog input pins
Analog input pin 4 AN4 Input
Analog input pin 5 AN5 Input
Group 1 analog input pins
A/D external trigger input pin ADTRG Input External trigger input pin for starting A/D
conversion