Datasheet

Appendix B Internal I/O Registers
Rev.7.00 Feb. 14, 2007 page 1002 of 1108
REJ09B0089-0700
PORT1—Port 1 Register H'FF50 Port 1
7
P17
⎯*
R
6
P16
⎯*
R
5
P15
⎯*
R
4
P14
⎯*
R
3
P13
⎯*
R
0
P10
⎯*
R
2
P12
⎯*
R
1
P11
⎯*
R
Note: * Determined by the state of pins P17 to P10.
State of port 1 pins
Bit
Initial value
Read/Write
:
:
:
PORT2—Port 2 Register H'FF51 Port 2
7
P27
⎯*
R
6
P26
⎯*
R
5
P25
⎯*
R
4
P24
⎯*
R
3
P23
⎯*
R
0
P20
⎯*
R
2
P22
⎯*
R
1
P21
⎯*
R
State of port 2 pins
Note: * Determined by the state of pins P27 to P20.
Bit
Initial value
Read/Write
:
:
:
PORT3—Port 3 Register H'FF52 Port 3
7
⎯
Undefined
⎯
6
⎯
Undefined
⎯
5
P35
⎯*
R
4
P34
⎯*
R
3
P33
⎯*
R
0
P30
⎯*
R
2
P32
⎯*
R
1
P31
⎯*
R
State of port 3 pins
Note: * Determined by the state of pins P35 to P30.
Bit
Initial value
Read/Write
:
:
: