M30302FAPFP datasheet(13/57 Pages) RENESAS

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M16C/30P Group

1. Overview

Rev.1.22

Mar 30, 2007

Page 13 of 53

REJ03B0088-0122

I : Input

O : Output

I/O : Input and output

Table 1.9

Pin Description (2)

Signal Name

Pin Name

I/O Type

Description

Main clock

input

XIN

I/O pins for the main clock generation circuit. Connect a ceramic

resonator or crystal oscillator between XIN and XOUT. To use the

external clock, input the clock from XIN and leave XOUT open.

Main clock

output

XOUT

Sub clock

input

XCIN

I/O pins for a sub clock oscillation circuit. Connect a crystal oscillator

between XCIN and XCOUT. To use the external clock, input the clock

from XCIN and leave XCOUT open.

Sub clock

output

XCOUT

Clock output

CLKOUT

The clock of the same cycle as fC, f8, or f32 is outputted.

INT interrupt

input

INT0 to INT4

Input pins for the INT interrupt.

NMI interrupt

input

NMI

Input pin for the NMI interrupt.

Key input

interrupt input

KI0 to KI3

Input pins for the key input interrupt.

Timer A

TA0OUT to

TA2OUT

I/O

These are timer A0 to timer A2 I/O pins. (however, the output of

TA0OUT for the N-channel open drain output.)

TA0IN to TA2IN

These are timer A0 to timer A2 input pins.

Timer B

TB0IN to TB2IN

These are timer B0 to timer B2 input pins.

Serial

interface

CTS0 to CTS2

These are send control input pins.

RTS0 to RTS2

These are receive control output pins.

CLK0 to CLK2

I/O

These are transfer clock I/O pins.

RXD0 to RXD2

These are serial data input pins.

TXD0 to TXD2

These are serial data output pins. (however, TXD2 for the N-channel

open drain output.)

CLKS1

This is output pin for transfer clock output from multiple pins function.

I2C mode

SDA0 to SDA2

I/O

These are serial data I/O pins. (however, SDA2 for the N-channel

open drain output.)

SCL0 to SCL2

I/O

These are transfer clock I/O pins. (however, SCL2 for the N-channel

open drain output.)

Reference

voltage input

VREF

Applies the reference voltage for the A/D converter.

A/D converter

AN0 to AN7,

AN0_0 to AN0_7

Analog input pins for the A/D converter.

ADTRG

This is an A/D trigger input pin.

ANEX0

I/O

This is the extended analog input pin for the A/D converter, and is the

output in external op-amp connection mode.

ANEX1

This is the extended analog input pin for the A/D converter.

I/O port

P0_0 to P0_7,

P1_0 to P1_7,

P2_0 to P2_7,

P3_0 to P3_7,

P4_0 to P4_7,

P5_0 to P5_7,

P6_0 to P6_7,

P7_0 to P7_7,

P9_0 to P9_7,

P10_0 to P10_7

I/O

8-bit I/O ports in CMOS, having a direction register to select an input

or output.

Each pin is set as an input port or output port. An input port can be set

for a pull-up or for no pull-up in 4-bit unit by program. (however, P7_0

and P7_1 for the N-channel open drain output.)

P8_0 to P8_4,

P8_6, P8_7

I/O

I/O ports having equivalent functions to P0.

Input port

P8_5

Input pin for the NMI interrupt. Pin states can be read by the P8_5 bit

in the P8 register.

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