R5F21226DFP Просмотр технического описания (PDF) - Renesas Electronics

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R5F21226DFP

RENESAS MCU

Renesas Electronics 

R8C/22 Group, R8C/23 Group

1. Overview

1.6 Pin Functions

Table 1.5 lists the Pin Functions and Table 1.6 lists the Pin Name Information by Pin Number.

Table 1.5 Pin Functions

Type

Symbol

I/O Type

Description

Power Supply Input

VCC

VSS

I

Apply 2.7 V to 5.5 V to the VCC pin. Apply 0 V to the

VSS pin.

Analog Power Supply AVCC, AVSS

Input

I

Applies the power supply for the A/D converter. Connect

a capacitor between AVCC and AVSS.

Reset Input

RESET

I

Input “L” on this pin resets the MCU.

MODE

MODE

I

Connect this pin to VCC via a resistor.

XIN Clock Input

XIN Clock Output

XIN

XOUT

I

These pins are provided for the XIN clock generation

O circuit I/O. Connect a ceramic resonator or a crystal

oscillator between the XIN and XOUT pins. To use an

externally derived clock, input it to the XIN pin and leave

the XOUT pin open.

INT Interrupt Input

INT0 to INT3

I

INT interrupt input pins.

INT0 Timer RD input pins.

INT1 Timer RA input pins.

Key Input Interrupt

KI0 to KI3

I

Key input interrupt input pins.

Timer RA

TRAIO

I/O Timer RA I/O pin.

TRAO

O Timer RA output pin.

Timer RB

TRBO

O Timer RB output pin.

Timer RD

TRDIOA0, TRDIOA1,

TRDIOB0, TRDIOB1,

TRDIOC0, TRDIOC1,

TRDIOD0, TRDIOD1

I/O Timer RD I/O ports.

TRDCLK

I

External clock input pin.

Timer RE

TREO

O Divided clock output pin.

Serial Interface

CLK0

I/O Transfer clock I/O pin.

RXD0, RXD1

I

Serial data input pins.

TXD0, TXD1

O Serial data output pins.

I2C Bus Interface

SCL

I/O Clock I/O pin.

SDA

I/O Data I/O pin.

Clock Synchronous

Serial I/O with Chip

Select

SSI

SCS

SSCK

I/O Data I/O pin.

I/O Chip-select signal I/O pin.

I/O Clock I/O pin.

SSO

I/O Data I/O pin.

CAN Module

CRX0

I

CAN data input pin.

CTX0

O CAN data output pin.

Reference Voltage Input VREF

I

Reference voltage input pin to A/D converter.

A/D Converter

AN0 to AN11

I

Analog input pins to A/D converter.

I/O Port

P0_0 to P0_7,

P1_0 to P1_7,

P2_0 to P2_7,

P3_0, P3_1,

P3_3 to P3_5, P3_7,

P4_3 to P4_5,

P6_0 to P6_7

I/O CMOS I/O ports. Each port contains an input/output

select direction register, allowing each pin in that port to

be directed for input or output individually.

Any port set to input can select whether to use a pull-up

resistor or not by a program.

Input Port

P4_2, P4_6, P4_7

I

Input only ports.

I: Input O: Output

I/O: Input and output

Rev.2.00 Aug 20, 2008 Page 8 of 48

REJ03B0097-0200

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