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Port
Description
Port 9
• 6-bit I/O
port
Port A
• 8-bit I/O port
• Schmitt inputs
Pins
Mode 1
P9
/SCK
/
Input and output (SCK
5
1
I R Q
,
TxD
) for serial communication interfaces 1 and 0
5
0
(SCI0, 1), IRQ
P9
/SCK
/
4
0
I R Q
,
input/output
4
P9
/RxD
,
3
1
P9
/RxD
,
2
0
P9
/TxD
,
1
1
P9
/TxD
0
0
PA
/TP
/
Output (TP
7
7
TIOCB
/A
from pro-
2
20
grammable
timing
pattern
controller
(TPC), input
or output
(TIOCB
16-bit inte-
grated timer
unit (ITU),
and generic
input/ output
PA
/TP
/
TPC output
6
6
TIOCA
/A
,
(TP
to TP
2
21
6
PA
/TP
/
ITU input or
5
5
TIOCB
/A
,
output
1
22
PA
/TP
/
(TIOCA
4
4
TIOCA
/A
TIOCB
1
23
TIOCA
and generic
input/ output
PA
/TP
/
TPC output (TP
3
3
TIOCB
/
TCLKB, TCLKA, TIOCB
0
TCLKD,
PA
/TP
/
2
2
TIOCA
/
0
TCLKC,
PA
/TP
/
1
1
TCLKB,
PA
/TP
/
0
0
TCLKA
Mode 3
, SCK
1
and IRQ
input, and 6-bit generic
5
4
)
Address
7
output (A
)
20
) for
2
TPC output
),
(TP
to TP
),
4
6
4
ITU input or
output
,
(TIOCA
,
2
2
,
TIOCB
,
1
1
),
TIOCA
),
1
1
address
output (A
23
to A
), and
21
generic
input/output
to TP
), ITU input or output (TCLKD, TCLKC,
3
0
, TIOCA
0
Mode 5
Mode 6
, RxD
, RxD
, TxD
,
0
1
0
1
TPC output
Address
(TP
), ITU
output (A
7
input or
output
(TIOCB
),
2
and generic
input/output
TPC output
TPC output
(TP
to
(TP
to
6
6
TP
), ITU
TP
), ITU
4
4
input or
input or
output
output
(TIOCA
,
(TIOCA
2
2
TIOCB
,
TIOCB
,
1
1
TIOCA
),
TIOCA
),
1
1
and generic
address
input/output
output (A
to A
), and
21
generic
input/output
), and generic input/output
0
Mode 7
IRQ
and
1
IRQ
input
0
and generic
input/output
TPC output
)
(TP
), ITU
20
7
input or
output
(TIOCB
),
2
and generic
input/output
TPC output
(TP
to
6
TP
), ITU
4
input or
output
,
(TIOCA
,
2
TIOCB
,
1
TIOCA
),
1
and generic
input/output
23
129
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