Rev. 5.00, 09/03, page 615 of 760
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 group s : group 0 (AN0 to AN 3), and group 1 (AN4 to AN7). AVCC and AVSS are the
power supply inputs for the analog circuits in the A/D converter. AVcc also functions as the A/D
conve rter reference v o l tage pin.
Table 20.1 A/D Converter Pins
Pin Name Abbreviation I/O Function
Analog pow er su pply pi n AVcc Input Analog pow er su pply
Analog ground pin AVss Input Analog ground and r efere nce v oltage
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 ex ternal trigger input
pin
ADTRG Input External trigger input for starting A/D
conversion