Datasheet

Section 16 A/D Converter
Rev. 3.00 Mar 17, 2006 page 743 of 926
REJ09B0283-0300
16.2 Input/Output Pins
Table 16.1 shows the pin configuration of the A/D converter.
The twelve analog input pins are divided into two channel sets: channel set 0 (AN0 to AN7) and
channel set 1 (AN12 to AN15).
In the H8S/2678 Group, each channel set is divided into four channels × two groups: group 0 in
channel set 0 (AN0 to AN3), group 1 in channel set 0 (AN4 to AN7), and group1 in channel set 1
(AN12 to AN15).
The AV
CC and AVSS pins are the power supply pins for the analog block in the A/D converter. The
Vref pin is the A/D conversion reference voltage pin.
Table 16.1 A/D Converter Pins
Pin Name Symbol I/O Function
Analog power supply pin AV
CC Input Analog block power supply
Analog ground pin AVSS Input Analog block ground
Reference voltage pin Vref Input A/D conversion reference voltage
Analog input pin 0 AN0 Input Channel set 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
Analog input pin 5 AN5 Input
Analog input pin 6 AN6 Input
Analog input pin 7 AN7 Input
Analog input pin 12 AN12 Input Channel set 1 analog inputs
Analog input pin 13 AN13 Input
Analog input pin 14 AN14 Input
Analog input pin 15 AN15 Input
A/D external trigger input
pin
ADTRG Input External trigger input for starting A/D
conversion