HD6432142 datasheet(257/1177 Pages) RENESAS

257 / 1177 page

Section 8 I/O Ports

Rev. 4.00 Sep 27, 2006 page 213 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 P92/

IRQ0

P91/

IRQ1

I/O port also functioning as external interrupt input (

IRQ0, IRQ1)

P90/

LWR/IRQ2/

ADTRG/ECS2

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), A/D converter

external trigger input

(

ADTRG), and host

interface control input

(

ECS2)

Port A

• 8-bit I/O port PA7/A23/

KIN15/

CIN15/PS2CD

PA6/A22/

KIN14/

CIN14/PS2CC

PA5/A21/

KIN13/

CIN13/PS2BD

PA4/A20/

KIN12/

CIN12/PS2BC

PA3/A19/

KIN11/

CIN11/PS2AD

PA2/A18/

KIN10/

CIN10/PS2AC

PA1/A17/

KIN9/

CIN9

PA0/A16/

KIN8/

CIN8

I/O port also

functioning as

key-sense

interrupt input

(

KIN15 to

KIN8),

expansion A/D

converter input

(CIN15 to

CIN8), and

keyboard

buffer

controller

input/output

(PS2CD,

PS2CC,

PS2BD,

PS2BC,

PS2AD,

PS2AC)

I/O port also

functioning as

address output (A23

to A16), key-sense

interrupt input

(

KIN15 to KIN8),

expansion A/D

converter input

(CIN15 to CIN8),

and keyboard buffer

controller input/

output (PS2CD,

PS2CC, PS2BD,

PS2BC, PS2AD,

PS2AC)

I/O port also functioning as

key-sense interrupt input

(

KIN15 to KIN8),

expansion A/D converter

input (CIN15 to CIN8), and

keyboard buffer controller

input/output (PS2CD,

PS2CC, PS2BD, PS2BC,

PS2AD, PS2AC)

Port B

• 8-bit I/O port PB7/D7

PB6/D6

PB5/D5

PB4/D4

PB3/D3/

CS4

PB2/D2/

CS3

PB1/D1/HIRQ4

PB0/D0/HIRQ3

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 also functioning as

HIF control input/output

pins (

CS3, CS4, HIRQ3,

HIRQ4)

HD6432142 Datasheet(PDF) 257 Page - Renesas Technology Corp

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