HD6432142 datasheet(264/1177 Pages) RENESAS

264 / 1177 page

Section 8 I/O Ports

Rev. 4.00 Sep 27, 2006 page 220 of 1130

REJ09B0327-0400

Expanded Modes

Single-Chip Mode

Port

Description

Pins

Mode 1

Mode 2, Mode 3

(EXPE = 1)

Mode 2, Mode 3

(EXPE = 0)

Port 9

• 8-bit I/O port P97/

WAIT

I/O port also functioning as

expanded data bus control input

(

WAIT)

I/O port

P96/

φ/EXCL

When DDR =

0: input port or

EXCL input

When DDR =

1 (after reset):

φ output

When DDR = 0 (after reset): input port or EXCL

input

When DDR = 1:

φ output

P95/

AS/IOS

P94/

HWR

P93/

Expanded data bus control

output(

AS/IOS, HWR, RD)

I/O port

P92/

IRQ0

P91/

IRQ1

I/O port also functioning as external interrupt input (

IRQ0, IRQ1)

P90/

LWR/

IRQ2/ADTRG

I/O port also functioning as

expanded data bus control output

(

LWR), external interrupt input

(

IRQ2), and A/D converter external

trigger input (

ADTRG)

I/O port also functioning as

external interrupt input

(

IRQ2) and A/D converter

external trigger input

(

ADTRG)

Port A

• 8-bit I/O port PA7 to PA0/

A23 to A16/

KIN15 to KIN8/

CIN15 to CIN8

I/O port also

functioning as

key-sense

interrupt input

(

KIN15 to

KIN8), and

expansion A/D

converter input

(CIN15 to

CIN8)

I/O port also

functioning as

address output (A23

to A16), key-sense

interrupt input

(

KIN15 to KIN8),

and expansion A/D

converter input

(CIN15 to CIN8)

I/O port also functioning as

key-sense interrupt input

(

KIN15 to KIN8) and

expansion A/D converter

input (CIN15 to CIN8)

Port B

• 8-bit I/O port PB7 to PB0/

D7 to D0

In 8-bit bus mode (ABW = 1): I/O

port

In 16-bit bus mode (ABW = 0): data

bus input/output (D7 to D0)

I/O port

HD6432142 Datasheet(PDF) 264 Page - Renesas Technology Corp

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