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P2DR—Port 2 Data Register
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Bit
Initial value
Read/Write
R/W
P3DDR—Port 3 Data Direction Register
Bit
P3 DDR
Initial value
Read/Write
P4DDR—Port 4 Data Direction Register
Bit
P4 DDR
Initial value
Read/Write
7
6
5
P2
P2
P2
7
6
5
0
0
0
R/W
R/W
7
6
5
P3 DDR
P3 DDR
7
6
5
0
0
0
W
W
W
Port 3 input/output select
7
6
5
P4 DDR
P4 DDR
7
6
5
0
0
0
W
W
W
Port 4 input/output select
H'C3
4
3
P2
P2
4
3
0
0
R/W
R/W
Data for port 2 pins
H'C4
4
3
P3 DDR
P3 DDR
P3 DDR
4
3
0
0
W
W
0 Generic input pin
1 Generic output pin
H'C5
4
3
P4 DDR
P4 DDR
P4 DDR
4
3
0
0
W
W
0 Generic input pin
1 Generic output pin
805
Port 2
2
1
0
P2
P2
P2
2
1
0
0
0
0
R/W
R/W
R/W
Port 3
2
1
0
P3 DDR
P3 DDR
2
1
0
0
0
0
W
W
W
Port 4
2
1
0
P4 DDR
P4 DDR
2
1
0
0
0
0
W
W
W
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