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Section 21 A/D Converter
Rev. 4.00 Sep. 14, 2005 Page 799 of 982
REJ09B0023-0400
21.1.2 Input Pins
Table 21.1 summarizes the A/D converter's input pins. The eight analog input pins are divided into
two groups: A/D0 (AN0 to AN3), and A/D1 (AN4 to AN7). AV
CC
and AV
SS
are the power supply
inputs for the analog circuits in the A/D converter. AV
CC
also functions as the A/D converter
reference voltage pin. AV
SS
also functions as the A/D converter reference ground pin.
Table 21.1 A/D Converter Pins
Pin Name Abbreviation I/O Function
Analog power supply pin AVcc Input Analog power supply and reference
voltage for A/D conversion
Analog ground pin AVss Input Analog ground and reference ground
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
A/D0 analog inputs
Analog input pin 4 AN4 Input
Analog input pin 5 AN5 Input
Analog input pin 6 AN6 Input
Analog input pin 7 AN7 Input
A/D1 analog inputs