Datasheet

Appendix B Internal I/O Registers
Rev.7.00 Feb. 14, 2007 page 1003 of 1108
REJ09B0089-0700
PORT4—Port 4 Register H'FF53 Port 4
7
P47
⎯*
R
6
P46
⎯*
R
5
P45
⎯*
R
4
P44
⎯*
R
3
P43
⎯*
R
0
P40
⎯*
R
2
P42
⎯*
R
1
P41
⎯*
R
State of port 4 pins
Note: * Determined by the state of pins P47 to P40.
Bit
Initial value
Read/Write
:
:
:
PORTA—Port A Register H'FF59 Port A
7
⎯
Undefined
⎯
6
⎯
Undefined
⎯
5
⎯
Undefined
⎯
4
⎯
Undefined
⎯
3
PA3
⎯*
R
0
PA0
⎯*
R
2
PA2
⎯*
R
1
PA1
⎯*
R
State of port A pins
Note: * Determined by the state of pins PA3 to PA0.
Bit
Initial value
Read/Write
:
:
:
PORTB—Port B Register H'FF5A Port B
7
PB7
⎯*
R
6
PB6
⎯*
R
5
PB5
⎯*
R
4
PB4
⎯*
R
3
PB3
⎯*
R
0
PB0
⎯*
R
2
PB2
⎯*
R
1
PB1
⎯*
R
State of port B pins
Note: * Determined by the state of pins PB7 to PB0.
Bit
Initial value
Read/Write
:
:
: