Input/Output Pins; Table 22.1 Pin Configuration - Renesas H8S/2158 User Manual

22.2

Input/Output Pins

Table 22.1 summarizes the pins used by the A/D converter. The 8 analog input pins are divided
into two groups consisting of four channels. Analog input pins 0 to 3 (AN0 to AN3) comprising
group 0 and analog input pins 4 to 7 (AN4 to AN7) comprising group1.
Note that this LSI does not provide the AN0 and AN1 pins. Expanded A/D conversion input pins
(CIN0 to CIN7) can be used instead of AN0. The AVCC and AVSS pins are the power supply
pins for the analog block in the A/D converter.

Table 22.1 Pin Configuration

Pin Name
Analog power supply
pin
Analog ground pin
Reference power
supply 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
Expanded A/D
conversion input
pins 0 to 7
Symbol I/O
AVCC Input
AVSS Input
AVref Input
AN0 Not
Installed
AN1 Not
Installed
AN2 Input
AN3 Input
AN4 Input
AN5 Input
AN6 Input
AN7 Input
ADTRG
Input
CIN0 to Input
CIN7
Function
Analog block power supply
Analog block ground and reference voltage
Analog block reference voltage
Group 0 analog input pins
Group 1 analog input pins
External trigger input pin for starting A/D
conversion
Expanded A/D conversion input (digital input)
channels 0 to 7
Can be used as group 0 analog input pins instead
of AN0.
Rev. 3.00 Jan 25, 2006 page 699 of 872
Section 22 A/D Converter
REJ09B0286-0300