HD643303x Hitachi, HD643303x Datasheet - Page 535

• Manufacturer Part Number: HD643303x
• Description: Hitachi Microcomputer
• Manufacturer: Hitachi

P9DDR—Port 9 Data Direction Register
PADDR—Port A Data Direction Register
P9DR—Port 9 Data Register
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
Bit
Initial value
Read/Write
PA DDR
7
W
—
—
7
0
7
1
—
—
7
1
PA DDR
6
W
—
—
6
0
6
1
—
—
6
1
PA DDR
5
W
—
5
0
W
5
0
R/W
Port A input/output select
—
5
0
0 Generic input
1 Generic output
PA DDR
520
P9 DDR
4
W
4
4
0
W
4
0
R/W
P9
4
0
4
PA DDR
Port 9 input/output select
0 Generic input
1 Generic output
3
W
—
W
3
0
3
0
R/W
—
3
0
Data for port 9 pins
PA DDR
H'D0
P9 DDR
H'D1
H'D2
2
2
W
2
0
W
2
0
R/W
P9
2
0
2
PA DDR
1
W
—
W
1
0
1
0
R/W
—
1
0
PA DDR
P9 DDR
0
Port A
W
0
Port 9
W
0
0
Port 9
0
0
R/W
P9
0
0
0