Datasheet

Appendix B Internal I/O Registers
Rev. 6.00 Aug 04, 2006 page 611 of 680
REJ09B0145-0600
PDR1—Port Data Register 1 H'D4 I/O ports
Bit
Initial value
Read/Write
Data for port 1 pins
7
P1
0
R/W
6
P1
0
R/W
5
P1
0
R/W
4
P1
0
R/W
3
P1
0
R/W
0
P1
0
R/W
2
P1
0
R/W
1
P1
0
R/W
76543210
PDR2—Port Data Register 2 H'D5 I/O ports
Bit
Initial value
Read/Write
7
P2
7
0
R/W
6
P2
6
0
R/W
5
P2
5
0
R/W
4
P2
4
0
R/W
3
P2
3
0
R/W
0
P2
0
0
R/W
2
P2
2
0
R/W
1
P2
1
0
R/W
Data for port 2 pins
PDR3—Port Data Register 3 H'D6 I/O ports
Bit
Initial value
Read/Write
7
P3
0
R/W
6
P3
0
R/W
5
P3
0
R/W
4
P3
0
R/W
3
P3
0
R/W
0
P3
0
R/W
2
P3
0
R/W
1
P3
0
R/W
0234567 1
Data for port 3 pins
PDR4—Port Data Register 4 H'D7 I/O ports
Bit
Initial value
Read/Write
7

1

6

1

5

1

4

1

3
P4
1
R
0
P4
0
R/W
2
P4
0
R/W
1
P4
0
R/W
3021
Data for port pins P4
2
to P4
0
Pin P4
3
state is read