Pin Functions In Each Operating Mode - Renesas H8/3067 Series User Manual

Section 3 MCU Operating Modes
3.5

Pin Functions in Each Operating Mode

The pin functions of ports 1 to 5 and port A vary depending on the operating mode. Table 3.3
indicates their functions in each operating mode.
Table 3.3 Pin Functions in Each Mode
Port Mode 1 Mode 2
Port 1 A to A A
7 0
Port 2 A to A A
15 8
Port 3 D to D D
15 8
*
1
Port 4 P4 to P4 D
7 0
Port 5 A to A A
19 16
Port A PA to PA PA
7 4
Notes: 1. Initial state. The bus mode can be switched by settings in ABWCR. These pins function
as P4 to P4
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2. Initial state. These pins become address output pins when the corresponding bits in the
data direction registers (P1DDR, P2DDR, P5DDR) are set to 1.
3. Initial state. A
A output by writing 0 in bits 7 to 5 of BRCR.
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4. Initial state. PA
BRCR.
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Mode 3
to A A to A
7 0 7 0
to A A to A
15 8 15 8
to D D to D
15 8 15 8
* *
1 1
to D P4 to P4
7 0 7 0
to A A to A
19 16 19 16
to PA PA to PA , A
7 4 6 4 20
in 8-bit bus mode, and as D
0
is always an address output pin. PA
20
to PA are switched over to A
7 4
Mode 4 Mode 5
A to A P1
7 0
A to A P2
15 8
D to D D
15 8
*
1
D to D P4
7 0
A to A P5
19 16
* *
3 3
PA to PA , A PA
6 4 20
to D in 16-bit bus mode.
7 0
to PA
6
to A output by writing 0 in bits 7 to 4 of
23 20
Mode 6
*
2
to P1 P1 to P1
7 0 7 0
*
2
to P2 P2 to P2
7 0 7 0
to D P3 to P3
15 8 7 0
*
1
to P4 P4 to P4
7 0 7 0
*
2
to P5 P5 to P5
3 0 3 0
*
4
to PA PA to PA
7 4 7 4
are switched over to A
4
Mode 7
P1 to P1
7 0
P2 to P2
7 0
P3 to P3
7 0
P4 to P4
7 0
P5 to P5
3 0
PA to PA
7 4
to
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