Renesas H8S Series Hardware Manual page 295

Port Description
Port A • 8-bit I/O
PA /A
7
port
PA /A
6
• On-chip
PA /A
5
MOS input
4
pull-up*
• Open-drain
output
4
capability*
• Schmitt-
PA /A
4
triggered
input
(PA to PA )
4 7
PA /A
3
Port B • 8-bit I/O
PB /A
7
port
• On-chip
MOS input
4
pull-up*
Port C • 8-bit I/O
PC /A
7
port
• On-chip
MOS input
4
pull-up*
Port D • 8-bit I/O
PD /D
7
port
• On-chip
MOS input
4
pull-up*
Port E • 8-bit I/O
PE /D
7
port
• On-chip
MOS input
4
pull-up*
Pins Mode 4*
/IRQ7 When DDR = 0 (after reset):
23
dual function as input ports
/IRQ6
22
and interrupt input pins
/IRQ5
(IRQ7 to IRQ5)
21
When DDR = 1: address
output
/IRQ4 Address output
20
to PA /A Address output
19 0 16
to PB /A Address output
15 0 8
to PC /A Address output
7 0 0
to PD /D Data bus input/output
15 0 8
to PE /D In 8-bit bus mode: I/O port
7 0 0
In 16-bit bus mode: data bus input/output
3 3
Mode 5* Mode 6
When DDR =
0 (after reset):
dual function
as input ports
and interrupt
input pins
(IRQ7 to
IRQ4)
When DDR =
1: address
output
When DDR =
0 (after reset):
input ports
When DDR =
1: address
output
When DDR =
0 (after reset):
input port
When DDR =
1: address
output
When DDR =
0 (after reset):
input port
When DDR =
1: address
output
Rev.6.00 Oct.28.2004 page 267 of 1016
Mode 7
Dual function
as I/O ports
and interrupt
input pins
(IRQ7 to
IRQ4)
I/O port
I/O port
I/O port
I/O port
I/O port
REJ09B0138-0600H