R8C2H datasheet(33/67 Pages) RENESAS

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R8C/2H Group, R8C/2J Group

1. Overview

Rev.1.00

Mar 28, 2008

Page 13 of 341

REJ09B0388-0100

I: Input

O: Output

I/O: Input and output

Table 1.8

Pin Functions of R8C/2J Group

Type

Symbol

I/O Type

Description

Power supply input VCC, VSS

–

Apply 2.2 V to 5.5 V to the VCC pin. Apply 0 V to the VSS pin.

Reset input

RESET

Input “L” on this pin resets the MCU.

MODE

Connect this pin to VCC via a resistor.

INT interrupt input

INT0, INT1

IINT interrupt input pins

Key input interrupt

KI0 to KI3

Key input interrupt input pins

Timer RA

TRAIO

I/O

Timer RA I/O pin

TRAO

Timer RA output pin

Timer RB

TRBO

Timer RB output pin

Timer RF

TRFI

Timer RF input pin

TRFO00 to TRFO02,

TRFO10 to TRFO11

Timer RF output pins

Serial interface

CLK0

I/O

Clock I/O pin

RXD0

Serial data input pin

TXD0

Serial data output pin

Comparator

VCMP1, VCMP2

Analog input pins to comparator

CVREF

Reference voltage input pin to comparator

VCOUT1, VCOUT2

Comparator output pins

I/O port

P1_0 to P1_7,

P3_3, P3_7,

P4_5, P6_5

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.

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