HD404328 Datasheet, PDF (44/96 Pages) Hitachi Semiconductor – 4 BIT SINGLE CHIP MICROCOMPUTER

HD404328 Series
Serial mode register (SMR): $005
3
2
1
0
Initial value: 0000, R/W: W
R1₀ /SCK pin mode selection
Port mode register A (PMRA): $004
SMR
Bit 3
0
1
Port
Selection
R1₀
SCK
3
2
1
0
Initial value: 0000, R/W: W
R1₂ /SO pin mode selection
R1₁ /SI pin mode selection
D₉ /INT₀ pin mode selection
D₁₀/INT₁ pin mode selection
PMRA
Bit 3
0
1
Port
Selection
D₁₀
INT₁
PMRA
Bit 2
0
1
Port
Selection
D₉
INT₀
PMRA
Bit 1
0
1
Port
Selection
R1₁
SI
PMRA
Bit 0
0
1
Port
Selection
R1₂
SO
Port mode register B (PMRB): $011
3
2
1
0
Initial value: 0000, R/W: W
D₈ /ZCD/EVENT pin mode selection
Not used
PMRB
Bit 1 Bit 0
0
0
1
Port
Selection
ZCD (low sensitivity)
ZCD (high sensitivity)*
1
0
D₈
1 EVENT
Note:* Becomes low sensitivity in subactive mode.
Figure 24 I/O Switching Mode Registers
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