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Port
Description
Pins
Port 9 • 6-bit I/O port
P9
5
/SCK
P9
4
/SCK
P9
3
P9
2
P9
1
P9
0
Port A • 8-bit I/O port
PA
7
• Schmitt inputs
TIOCB
PA
6
TIOCA
PA
5
TIOCB
PA
4
TIOCA
PA
3
TIOCB
TCLKD
PA
2
TIOCA
TCLKC
PA
1
TCLKB
/TEND
PA
0
TCLKA
/TEND
Port B • 8-bit I/O port
PB
7
RXD
PB
6
TXD
PB
5
SCK
PB
4
UCAS
PB
3
TMIO
DREQ
PB
2
TMO
PB
1
TMIO
DREQ
PB
0
TMO
Note: * P8
can be used as an output port by making a setting in DRCRA.
1
Expanded Modes
Mode 1
Mode 2
/IRQ
Input and output (SCK
5
(SCI1/0), IRQ
and IRQ
1
5
/IRQ
4
0
/RxD
1
/RxD
0
/TxD
1
/TxD
0
/TP
/
Output (TP
) from pro-
7
7
grammable timing
/A
2
20
pattern controller (TPC),
input or output (TIOCB
for 16-bit timer and
generic input/output
/TP
/
TPC output (TP
to TP
6
6
/A
16-bit timer input and
2
21
/TP
/
output (TIOCA
, TIOCB
5
2
/A
TIOCA
) , and generic
1
22
1
/TP
/
input/output
4
/A
1
23
/TP
/
TPC output (TP
to TP
3
3
/
TCLKA), 8-bit timer input (TCLKD, TCLKC, TCLKB, TCLKA), output (TEND
0
controller (DMAC), and generic input/output
/TP
/
2
/
0
/TP
/
1
1
/TP
/
0
0
/TP
/
TPC output (TP
to TP
15
15
interface output (LCAS, UCAS), and generic input/output
2
/TP
/
14
2
/TP
/
13
/LCAS
2
/TP
/
12
/TP
/
TPC output (TP
to TP
11
11
/
TMO
), DMAC input (DREQ
3
0
/CS
input/output
1
4
/TP
/
10
/CS
2
5
/TP
/
9
/
1
/CS
0
6
/TP
/
8
/CS
0
7
Mode 3
Mode 4
Mode 5
, SCK
, RxD
, RxD
, TxD
, TxD
) for serial communication interfaces 1 and 0
1
0
1
0
1
0
input, and 6-bit generic input/output
4
Address output
Address output (A
(A
)
TPC output (TP
20
input or output
)
(TIOCB
2
timer, and generic
input/output
),
TPC output (TP
to TP
),
4
6
4
16-bit timer input and
,
output (TIOCA
, TIOCB
,
1
2
1
TIOCA
), address output
1
(A
to A
), and generic
23
21
input/output
), 16-bit timer input and output (TIOCB
0
), SCI2 input and output (SCK
12
2
), 8-bit timer input and output (TMIO
8
, DREQ
), CS
to CS
output, and generic
1
0
7
4
Rev. 4.00 Jan 26, 2006 page 271 of 938
Section 8 I/O Ports
Single-Chip Modes
Mode 6
),
TPC output (TP
20
),
timer input or output
7
(TIOCB
) for 16-bit
input/output
2
TPC output (TP
16-bit timer input and
output (TIOCA
TIOCA
) and generic
1
input/output
, TIOCA
, TCLKD, TCLKC, TCLKB,
0
0
, TEND
) from DMA
1
0
, RxD
, TxD
), DRAM
TPC output (TP
2
2
SCI2 input and output
(SCK
, RxD
2
generic input/output
, TMO
, TMIO
,
TPC output (TP
3
2
1
8-bit timer input and
output (TMIO
TMIO
, TMO
1
input (DREQ
and generic input/output
REJ09B0276-0400
Mode 7
), 16-bit
7
), and generic
2
to TP
),
6
4
, TIOCB
,
2
1
to TP
),
15
12
, TxD
), and
2
2
to TP
),
11
8
, TMO
,
3
2
), DMAC
0
, DREQ
),
1
0
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