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17.2 Input/Output
Pins
Table 17.1 summarizes the input pins used by the A/D converter. 16 analog input pins are divided
into four groups, each of which includes four channels; analog input pins 0 to 3 (AN0 to AN3)
comprising group 0, analog input pins 4 to 7 (AN4 to AN7) comprising group 1, analog input pins
8 to 11 (AN8 to AN11) comprising group 2, and analog input pins 12 to 15 (AN12 to AN15)
comprising group 3. The AVcc and AVss pins are the power supply pins for the A/D converter
analog section. The Vref pin is the A/D conversion reference voltage pin.
Table 17.1 Pin Configuration
Pin Name
Symbol
I/O
Function
Analog power supply pin
AV
CC
Input
Analog section power supply and reference
voltage
Analog ground pin
AV
SS
Input
Analog section ground and reference
voltage
Reference voltage pin
Vref
Input
Reference voltage of 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
Analog input pin 6
AN6
Input
Analog input pin 7
AN7
Input
Group 1 analog input pins
Analog input pin 8
AN8
Input
Analog input pin 9
AN9
Input
Analog input pin 10
AN10
Input
Analog input pin 11
AN11
Input
Group 2 analog input pins
Analog input pin 12
AN12
Input
Analog input pin 13
AN13
Input
Analog input pin 14
AN14
Input
Analog input pin 15
AN15
Input
Group 3 analog input pins
A/D external trigger input
pin
ADTRG
Input
External trigger input pin for starting A/D
conversion
Summary of Contents for H8S/2627
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