HD6433802H Datasheet, PDF (404/435 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

PCRA—Port control register A
Bit
7
6
5
—
—
—
Initial value
1
1
1
Read/Write
—
—
—
PMRB—Port mode register B
Bit
7
6
5
—
—
—
Initial value
1
1
1
Read/Write
—
—
—
H'ED
I/O ports
4
3
2
1
0
— PCRA₃ PCRA ₂ PCRA ₁ PCRA ₀
1
0
0
0
0
—
W
W
W
W
Port A input/output select
0 Input pin
1 Output pin
H'EE
I/O ports
4
3
2
1
0
—
IRQ1
—
—
—
1
0
1
1
1
—
R/W
—
—
—
PB₃/AN₃/IRQ₁ pin function switch
0 Functions as PB₃/AN₃ input pin
1 Functions as IRQ₁ input pin
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