Datasheet

Appendix B Internal I/O Registers
Rev. 4.00 Sep 27, 2006 page 1050 of 1130
REJ09B0327-0400
TCNT0—Timer Counter 0 H'FFA8 (W), H'FFA9 (R) WDT0
TCNT1—Timer Counter 1 H'FFEA (W), H'FFEB (R) WDT1
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
0
0
R/W
2
0
R/W
1
0
R/W
Bit
Initial value
Read/Write
Up-counter
PAODR—Port A Output Data Register H'FFAA Port A
7
PA7ODR
0
R/W
6
PA6ODR
0
R/W
5
PA5ODR
0
R/W
4
PA4ODR
0
R/W
3
PA3ODR
0
R/W
0
PA0ODR
0
R/W
2
PA2ODR
0
R/W
1
PA1ODR
0
R/W
Bit
Initial value
Read/Write
Output data for port A pins
PAPIN—Port A Input Data Register H'FFAB (R) Port A
7
PA7PIN
—*
R
6
PA6PIN
—*
R
5
PA5PIN
—*
R
4
PA4PIN
—*
R
3
PA3PIN
—*
R
0
PA0PIN
—*
R
2
PA2PIN
—*
R
1
PA1PIN
—*
R
Bit
Initial value
Read/Write
Note: * Determined by state of pins PA7 to PA0.
Port A pin states
PADDR—Port A Data Direction Register H'FFAB (W) Port A
7
PA7DDR
0
W
6
PA6DDR
0
W
5
PA5DDR
0
W
4
PA4DDR
0
W
3
PA3DDR
0
W
0
PA0DDR
0
W
2
PA2DDR
0
W
1
PA1DDR
0
W
Bit
Initial value
Read/Write
Specification of input or output for port A pins