HD6432351 datasheet(360/1025 Pages) RENESAS

360 / 1025 page

Section 9 I/O Ports

Rev. 3.00 Sep 15, 2006 page 326 of 988

REJ09B0330-0300

Port Description

Pins

Mode 1 Mode 2*

1 Mode 3*1 Mode 4

Mode 5 Mode 6*

1 Mode 7*1

PA7/A23/

IRQ7

PA6/A22/

IRQ6

PA5/A21/

IRQ5

Dual function as I/O ports and

interrupt input pins (

IRQ7 to

IRQ4)

When DDR = 0 (after

reset): dual function

as input ports and

interrupt input pins

(

IRQ7 to IRQ5)

When DDR = 1:

address output

Port A

PA4/A20/

IRQ4

Address output

When

DDR = 0

(after

reset):

dual

function

as input

ports and

interrupt

input pins

(

IRQ7 to

IRQ4)

When

DDR = 1:

address

output

Dual

function

as I/O

ports and

interrupt

input pins

(

IRQ7 to

IRQ4)

• 8-bit I/O

port

• Built-in

MOS input

pull-up*

• Open-drain

output

capability*

• Schmitt-

triggered

input (PA4

to PA7)

PA3/A19 to

PA0/A16

I/O ports

Address output

When

DDR = 0

(after

reset):

input

ports

When

DDR = 1:

address

output

I/O ports

Port B • 8-bit I/O

port*

• Built-in

MOS input

pull-up*

PB7/A15 to

PB0/A8

Address

output

When

DDR = 0

(after

reset):

input port

When

DDR = 1:

address

output

I/O port

Address output

When

DDR = 0

(after

reset):

input port

When

DDR = 1:

address

output

I/O port

Port C • 8-bit I/O

port*

• Built-in

MOS input

pull-up*

PC7/A7 to

PC0/A0

Address

output

When

DDR = 0

(after

reset):

input port

When

DDR = 1:

address

output

I/O port

Address output

When

DDR = 0

(after

reset):

input port

When

DDR = 1:

address

output

I/O port

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