Table of Contents
Advertisement
Appendix B Internal I/O Registers
P1DDR—Port 1 Data Direction Register
Initial value
Modes 1 to 4
Read/Write
Initial value
Modes 5 to 7
Read/Write
P2DDR—Port 2 Data Direction Register
Initial value
Modes 1 to 4
Read/Write
Initial value
Modes 5 to 7
Read/Write
Rev. 4.00 Jan 26, 2006 page 792 of 938
REJ09B0276-0400
7
6
Bit
P1
DDR
P1
DDR
7
6
1
1
0
0
W
W
7
6
Bit
P2
DDR
P2
DDR
7
6
1
1
0
0
W
W
H'EE000
5
4
3
P1
DDR
P1
DDR
P1
DDR
5
4
3
1
1
1
0
0
0
W
W
W
Port 1 input/output select
0
Generic input
1
Generic output
H'EE001
5
4
3
P2
DDR
P2
DDR
P2
DDR
5
4
3
1
1
1
0
0
0
W
W
W
Port 2 input/output select
0
Generic input
1
Generic output
Port 1
2
1
0
P1
DDR
P1
DDR
P1
DDR
2
1
0
1
1
1
0
0
0
W
W
W
Port 2
2
1
0
P2
DDR
P2
DDR
P2
DDR
2
1
0
1
1
1
0
0
0
W
W
W
Advertisement
Table of Contents
