Pin Configuration - Hitachi H8S/2646 Hardware Manual

16.1.3

Pin Configuration

Table 16-1 summarizes the input pins used by the A/D converter.
The AV and AV pins are the power supply pins for the analog block in the A/D converter. The
CC SS
V pin is the A/D conversion reference voltage pin.
ref
The 12 analog input pins are divided into two channel sets and two groups, with analog input pins
0 to 7 (AN0 to AN7) comprising channel set 0, analog input pins 8 to 11 (AN8 to AN11)
comprising channel set 1, analog input pins 0 to 3 and 8 to 11 (AN0 to AN3, AN8 to AN11)
comprising group 0, and analog input pins 4 to 7 (AN4 to AN7) comprising group 1.
Table 16-1 A/D Converter Pins
Pin Name
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
Analog input pin 8
Analog input pin 9
Analog input pin 10
Analog input pin 11
A/D external trigger input
pin
Symbol I/O
AV Input
CC
AV Input
SS
V Input
ref
AN0 Input
AN1 Input
AN2 Input
AN3 Input
AN4 Input
AN5 Input
AN6 Input
AN7 Input
AN8 Input
AN9 Input
AN10 Input
AN11 Input
ADTRG
Input
Function
Analog block power supply
Analog block ground and reference voltage
A/D conversion reference voltage
Channel set 0 (CH3 = 0) group 0 analog inputs
Channel set 0 (CH3 = 0) group 1 analog inputs
Channel set 1 (CH3 = 1) group 0 analog inputs
External trigger input for starting A/D
conversion
589