R8C3GA datasheet(9/56 Pages) RENESAS

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R8C/3GA Group

1. Overview

REJ03B0235-0110 Rev.1.10 Sep. 10, 2009

Page 9 of 53

I: Input

O: Output

I/O: Input and output

Table 1.6

Pin Functions (2)

Item

Pin Name

I/O Type

Description

Reference voltage

input

VREF

Reference voltage input pin to A/D converter and D/A

converter

A/D converter

AN0, AN1, AN5, AN6,

AN8 to AN11

Analog input pins to A/D converter

ADTRG

AD external trigger input pin

D/A converter

DA0, DA1

D/A converter output pins

Comparator A

LVCMP1, LVCMP2

Comparator A analog voltage input pins

LVREF

Comparator A reference voltage input pin

LVCOUT1, LVCOUT2

Comparator A output pins

Comparator B

IVCMP1, IVCMP3

Comparator B analog voltage input pins

IVREF1, IVREF3

Comparator B reference voltage input pins

Voltage detection

circuit

LVCMP2

Detection voltage input pin for voltage detection 2

I/O port

P0_1, P0_2,

P0_6, P0_7,

P1_0 to P1_7,

P3_3 to P3_5,

P3_7,

P4_5 to P4_7

I/O

CMOS I/O ports. Each port has an I/O select direction

or output individually.

Any port set to input can be set to use a pull-up resistor or not

by a program.

All ports can be used as LED drive ports.

Input port

P4_2

Input-only port

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