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