HD404618 Datasheet, PDF (40/89 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404618 Series
Serial mode register: $005 (SMR)
3
2
1
0
Port mode register A: $004 (PMRA)
3
2
1
0
SMR
Bit 3
0
1
Port
selection
R0 ₀
SCK
R0₀ /SCK pin mode selection
R0₂ /SO pin mode selection
R0₁ /SI pin mode selection
R3₂ /INT₀ pin mode selection
R3₃ /INT₁ pin mode selection
PMRA
Bit 3
0
1
Port
selection
R3₃
INT₁
PMRA
Bit 2
0
1
Port
selection
R3₂
INT₀
PMRA
Bit 1
0
1
Port
selection
R0₁
SI
PMRA
Bit 0
0
1
Port
selection
R0 ₂
SO
Port mode register B: $012 (PMRB)
3
2
1
0
D₁₂ /COMP0 pin mode selection
D₁₃ /COMP1 pin mode selection
R3₁ /TIMO pin mode selection
Pull-up MOS on/off selection
PMRB
Bit 3
0
1
Pull-up
MOS
on/off
Off
On
PMRB
Bit 2
0
1
Port
selection
R3₁
TIMO
PMRB
Bit 1
0
1
Port
selection
D₁₃
COMP₁
PMRB
Bit 0
0
1
Figure 24 I/O Switching Mode Registers
Port
selection
D₁₂
COMP₀
40