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
:
:
: