R5F21368SNFA datasheet(10/61 Pages) RENESAS

Part #	R5F21368SNFA

Description	RENESAS MCU

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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R8C/36T-A Group

1. Overview

R01DS0055EJ0100 Rev.1.00

Page 10 of 58

Dec 09, 2011

1.5

Pin Functions

Tables 1.7 and 1.8 list Pin Functions.

Note:

1. Contact the oscillator manufacturer for oscillation characteristics.

Table 1.7

Pin Functions (1)

Item

Pin Name

I/O

Description

Power supply input

VCC, VSS

—

Apply 1.8 V through 5.5 V to the VCC pin.

Apply 0 V to the VSS pin.

Analog power supply

input

AVCC, AVSS

—

Power supply input for the A/D converter.

Connect a capacitor between pins AVCC and AVSS.

Reset input

RESET

I

Applying a low level to this pin resets the MCU.

MODE

I

Connect this pin to the VCC pin via a resistor.

XIN clock input

XIN

I

I/O for the XIN clock generation circuit.

Connect a ceramic resonator or a crystal oscillator

between pins XIN and XOUT. (1)

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

leave the XOUT pin open.

XIN clock output

XOUT

I/O

XCIN clock input

XCIN

I

I/O for the XCIN clock generation circuit.

Connect a crystal oscillator between pins XCIN and

XCOUT. (1)

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

leave the XCIN pin open.

XCIN clock output

XCOUT

I/O

INT interrupt input

INT0 to INT4

I

INT interrupt input.

Key input interrupt

KI0 to KI3

I

Key input interrupt input.

Timer RJ_0

TRJIO_0

I/O

Input/output for timer RJ.

TRJO_0

O

Output for timer RJ.

Timer RB2_0

TRBO_0

O

Output for timer RB2.

Timer RC_0

TRCCLK_0

I

External clock input.

TRCTRG_0

I

External trigger input.

TRCIOA_0, TRCIOB_0,

TRCIOC_0, TRCIOD_0

I/O

Input/output for timer RC.

Timer RE2

TMRE2O

O

Divided clock output.

Serial interface

(UART0)

CLK_0, CLK_1

I/O

Transfer clock input/output.

RXD_0, RXD_1

I

Serial data input.

TXD_0, TXD_1

O

Serial data output.

Serial interface

(UART2)

CTS2

I

Input for transmission control.

RTS2

O

Output for reception control.

SCL2

I/O

I2C mode clock input/output.

SDA2

I/O

I2C mode data input/output.

RXD2

I

Serial data input.

TXD2

O

Serial data output.

CLK2

I/O

Transfer clock input/output.

Synchronous serial

communication unit

(SSU_0)

SSI_0

I/O

Data input/output.

SCS_0

I/O

Chip-select input/output.

SSCK_0

I/O

Clock input/output.

SSO_0

I/O

Data input/output.

I2C bus (I2C_0)

SCL_0

I/O

Clock input/output.

SDA_0

I/O

Data input/output.

Reference voltage

input

VREF

I

Reference voltage input for the A/D converter.

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