HD404639R Datasheet, PDF (57/135 Pages) Renesas Technology Corp – 4-Bit Single-Chip Microcomputer

Port mode register A (PMRA: $004)
Bit
Initial value
Read/Write
Bit name
3
0
W
PMRA3
2
1
0
0
W
W
PMRA2 PMRA1
0
0
W
PMRA0
HD404639R Series
PMRA0
0
1
R4₃/SO₁ mode selection
R4₃
SO₁
PMRA1
0
1
R4₂/SI₁ mode selection
R4₂
SI₁
PMRA2
0
1
R5₃/SO₂ mode selection
R5₃
SO₂
PMRA3
0
1
R5₂/SI₂ mode selection
R5₂
SI₂
Figure 36 Port Mode Register A (PMRA)
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