Hitachi H8/3048 Hardware Manual page 811

P1DDR—Port 1 Data Direction Register
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Bit 7
P1 DDR
7
Initial value 1
Modes
1 to 4
Read/Write —
Initial value 0
Modes
5 to 7
Read/Write W
P2DDR—Port 2 Data Direction Register
Bit 7
P2 DDR
7
Initial value 1
Modes
1 to 4
Read/Write —
Initial value 0
Modes
5 to 7
Read/Write W
P1DR—Port 1 Data Register
Bit 7
P1
7
Initial value 0
Read/Write R/W
6 5 4
P1 DDR P1 DDR P1 DDR
6 5 4
1 1 1
— — —
0 0 0
W W W
Port 1 input/output select
0 Generic input pin
1 Generic output pin
6 5 4
P2 DDR P2 DDR P2 DDR
6 5 4
1 1 1
— — —
0 0 0
W W W
Port 2 input/output select
0 Generic input pin
1 Generic output pin
6 5 4
P1 P1 P1
6 5 4
0 0 0
R/W R/W R/W
Data for port 1 pins
804
H'C0
3 2 1
P1 DDR P1 DDR P1 DDR
3 2 1
1 1 1
— — —
0 0 0
W W W
H'C1
3 2 1
P2 DDR P2 DDR P2 DDR
3 2 1
1 1 1
— — —
0 0 0
W W W
H'C2
3 2 1
P1 P1 P1
3 2 1
0 0 0
R/W R/W R/W
Port 1
0
P1 DDR
0
1
—
0
W
Port 2
0
P2 DDR
0
1
—
0
W
Port 1
0
P1
0
0
R/W