15.1.3 Input Pins
Table 15.1 lists 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). AVCC and AVSS are the power supply
for the analog circuits in the A/D converter. AVref is the A/D conversion reference voltage.
Table 15.1 A/D Converter Pins
Pin Name
Abbreviation
AVCC
AVSS
I/O
Function
Analog power supply pin
Analog ground pin
Reference voltage pin
Analog input pin 0
Analog input pin 1
Analog input pin 2
Analog input pin 3
Analog input pin 4
Analog input pin 5
Analog input pin 6
Analog input pin 7
A/D external trigger input pin
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Analog power supply
Analog ground and reference voltage
Analog reference voltage
Group 0 analog inputs
AVref
AN0
AN1
AN2
AN3
AN4
Group 1 analog inputs
AN5
AN6
AN7
ADTRG
External trigger input for starting A/D
conversion
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HITACHI [ HITACHI SEMICONDUCTOR ]
