HD6432142 datasheet(260/1177 Pages) RENESAS

260 / 1177 page

Section 8 I/O Ports

Rev. 4.00 Sep 27, 2006 page 216 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/SDA0

I/O port also functioning as

expanded data bus control input

(

WAIT) and I2C bus interface 0

(option) input/output (SDA0)

I/O port also functioning as

2C bus interface 0 (option)

input/output (SDA0)

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/CS1

P94/

HWR/IOW

P93/

RD/IOR

Expanded data bus control output

(

AS/IOS, HWR, RD)

I/O port also functioning as

host interface control input

(

CS1, IOW, IOR)

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)

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