R32C121 datasheet(12/113 Pages) RENESAS

12 / 113 page

REJ03B0237-0050 Rev.0.50 Jul 31, 2008

Page 12 of 111

Under development

Preliminary Specification

This is a preliminary specification and is subject to change.

R32C/121 Group

1. Overview

Table 1.8

Pin Definitions and Functions (2/3)

Function

Symbol

I/O

Description

Timer A

TA0OUT to TA4OUT

I/O

Timers A0 to A4 input/output

TA0IN to TA4IN

Timers A0 to A4 input

Timer B

TB0IN to TB5IN

Timers B0 to B5 input

Three-phase

motor control

timer output

U, V, V, W, W

Three-phase motor control timer output

Serial interface

CTS0 to CTS4

Handshake input

RTS0 to RTS4

Handshake output

CLK0 to CLK4

I/O

Transmit/receive clock input/output

RXD0 to RXD4

Serial data input

TXD0 to TXD4

Serial data output

I2C bus

(simplified)

SDA0 to SDA2

I/O

Serial data input/output

SCL0 to SCL2

I/O

Transmit/receive clock input/output

Serial interface

special functions

STXD0 to STXD2

Serial data output in slave mode

SRXD0 to SRXD2

Serial data input in slave mode

SS0 to SS2

Input to control serial interface special functions

A/D converter

AN_0 to AN_7

AN0_0 to AN0_7

AN2_0 to AN2_7

Analog input for the A/D converter

ADTRG

External trigger input for the A/D converter

ANEX0

I/O

Expanded analog input for the A/D converter and

output in external op-amp connection mode

ANEX1

Expanded analog input for the A/D converter

D/A converter

DA0 to DA1

Output for the D/A converter

Reference voltage

input

VREF

Reference voltage input for the A/D converter and D/

A converter

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