HD6432138SW datasheet(73/1061 Pages) RENESAS

73 / 1061 page

Section 1 Overview

Rev. 4.00 Jun 06, 2006 page 19 of 1004

REJ09B0301-0400

Pin No.

Type

Symbol

FP-80A

TFP-80C

I/O

Name and Function

Operating

mode

control

MD1

MD0

Input

Mode pins: These pins set the operating mode.

The relation between the settings of pins MD1 and

MD0 and the operating mode is shown below.

These pins should not be changed while the MCU

is operating.

MD1

MD0

Operating

Mode

Description

Mode 1

Normal

Expanded mode with

on-chip ROM disabled

Mode 2

Advanced

Expanded mode with

on-chip ROM enabled

or single-chip mode

Mode 3

Normal

Expanded mode with

on-chip ROM enabled

or single-chip mode

System

control

RES

Input

Reset input: When this pin is driven low, the chip is

reset.

STBY

Input

Standby: When this pin is driven low, a transition is

made to hardware standby mode.

Address

bus

A15 to

48 to 55,

57 to 64

Output Address bus: These pins output an address.

Data bus

D7 to

72 to 65

Input/

output

Data bus (upper): Bidirectional data bus.

Used for 8-bit data.

Bus control

WAIT

Input

Wait: Requests insertion of a wait state in the bus

cycle when accessing external 3-state address

space.

Output Read: When this pin is low, it indicates that the

external address space is being read.

Output Write: When this pin is low, it indicates that the

external address space is being written to.

AS/IOS

Output Address strobe: When this pin is low, it indicates

that address output on the address bus is valid.

HD6432138SW Datasheet(PDF) 73 Page - Renesas Technology Corp

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