R5F2138CMDFD datasheet(10/58 Pages) RENESAS

10 / 58 page

R8C/38M Group

1. Overview

Under development Preliminary document

Specifications in this document are tentative and subject to change.

R01DS0082EJ0110 Rev.0.10

Page 10 of 55

Mar 04, 2011

1.5

Pin Functions

Tables 1.6 and 1.7 list Pin Functions.

I: Input

O: Output

I/O: Input and output

Note:

1. Refer to the oscillator manufacturer for oscillation characteristics.

Table 1.6

Pin Functions (1)

Item

Pin Name

I/O Type

Description

Power supply input VCC, VSS

—

Apply 1.8 to 5.5 V to the VCC pin.

Apply 0 V to the VSS pin.

Analog power

supply input

AVCC, AVSS

—

Power supply for the A/D converter.

Connect a capacitor between AVCC and AVSS.

Reset input

RESET

Input “L” on this pin resets the MCU.

MODE

Connect this pin to VCC via a resistor.

XIN clock input

XIN

These pins are provided for XIN clock generation circuit I/O.

Connect a ceramic resonator or a crystal oscillator between

the XIN and XOUT pins. (1)

To use an external clock, input it to the XOUT pin and leave

the XIN pin open.

XIN clock output

XOUT

I/O

XCIN clock input

XCIN

These pins are provided for XCIN clock generation circuit I/O.

Connect a crystal oscillator between the XCIN and XCOUT

pins. (1)

To use an external clock, input it to the XCIN pin and leave

the XCOUT pin open.

XCIN clock output

XCOUT

INT interrupt input

INT0 to INT4

INT 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 RC

TRCCLK

External clock input pin.

TRCTRG

External trigger input pin.

TRCIOA, TRCIOB,

TRCIOC, TRCIOD

I/O

Timer RC I/O pins.

Timer RD

TRDIOA0, TRDIOA1,

TRDIOB0, TRDIOB1,

TRDIOC0, TRDIOC1,

TRDIOD0, TRDIOD1

I/O

Timer RD I/O pins.

TRDCLK

External clock input pin.

Timer RE

TREO

Divided clock output pin.

Timer RF

TRFO00, TRFO10,

TRFO01,TRFO11,

TRFO02,TRFO12

Timer RF output pins.

TRFI

Timer RF input pin.

Timer RG

TRGIOA, TRGIOB

I/O

Timer RG I/O ports.

TRGCLKA, TRGCLKB

External clock input pins.

Serial interface

CLK0, CLK1, CLK2

I/O

Transfer clock I/O pins.

RXD0, RXD1, RXD2

Serial data input pins.

TXD0, TXD1, TXD2

Serial data output pins.

CTS2

Transmission control input pin.

RTS2

Reception control output pin.

SCL2

I/O

I2C mode clock I/O pin.

SDA2

I/O

I2C mode data I/O pin.

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