HD6433937 Datasheet, PDF (474/521 Pages) Hitachi Semiconductor – Hardware Manual

PDR9—Port data register 9
H'DC
I/O ports
Bit
7
6
5
4
3
2
1
0
—
—
—
—
P9₃
P9₂
P9₁
P9₀
Initial value
0
0
0
0
0
0
0
0
Read/Write
—
—
—
—
R/W
R/W
R/W
R/W
Data for port 9 pins
PDRA—Port data register A
H'DD
I/O ports
Bit
7
6
5
4
3
2
1
0
—
—
—
—
PA₃
PA₂
PA₁
PA₀
Initial value
1
1
1
1
0
0
0
0
Read/Write
—
—
—
—
R/W R/W R/W R/W
Data for port A pins
PDRB—Port data register B
H'DE
I/O ports
Bit
7
6
5
4
3
2
1
0
PB ₇
PB ₆
PB ₅
PB ₄
PB ₃
PB ₂
PB ₁
PB ₀
Read/Write
R
R
R
R
R
R
R
R
Read port B pin states
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