Renesas R8C/15 Manual de usuario descargar pdf (Pagina 7)

Rev.0.10 Mar 4, 2004 Page 7 of 16

REJ03B0078-0010Z

Under development

R8C/15 Group 1. Overview

Preliminary specification

Specications in this manual are tentative and subject to change.

1.6 Pin Description

Table 1.3 shows the pin description

I: Input O: Output I/O: Input and output

Table 1.3 Pin Description

Signal name Pin name I/O type Function

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.

Reset input RESET

I “L” on this input resets the MCU.

MODE MODE I Connect this pin to VCC via a resistor.

Main clock input XIN I These pins are provided for the main clock

generating circuit input/output. 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.

Main clock output XOUT O

INT interrupt input INT0

, INT1, INT3 I These are INT interrupt input pins.

Key input interrupt KI0

to KI3 I These are key input interrupt input pins.

Timer X CNTR0 I/O This is the timer X I/O pin.

CNTR0

O This is the timer X output pin.

Timer Z TZOUT O This is the timer Z output pin.

Timer C TCIN I This is the timer C input pin.

CMP0_0 to

CMP0_3, CMP1_0

to CMP1_3

O These are the timer C output pins.

Serial interface CLK0 I/O This is a transfer clock I/O pin.

RXD0 I These are serial data input pins.

TXD0 O These are serial data output pins.

SSUA SSI I/O This is a data I/O pin.

SCS

I/O This is a chip-select signal I/O pin.

SSCK I/O This is a clock I/O pin.

SSO I/O This is a data I/O pin.

Reference voltage

input

VREF I This is a reference voltage input pin for A-D

converter.

A-D converter AN8 to AN11 I These are analog input pins for A-D converter.

I/O port P1_0 to P1_7,

P3_3 to P3_5,

P3_7, P4_5

I/O These are CMOS I/O ports. Each port has 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 program.

P1_0 to P1_7 also function as LED drive ports.

Input port P4_6, P4_7 I These are input only pins.

1 2 3 4 5 6 7 8 9 10 11 12 ... 17 18

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