HD404849 Datasheet, PDF (91/125 Pages) Hitachi Semiconductor – 4-Bit Single-Chip Microcomputer

HD404849 Series
Miscellaneous Register (MIS: $00C): This register has the following function (figure 76).
• R2₃/SO pin PMOS control
Miscellaneous register (MIS: $00C) is a 4-bit write-only register and is reset to $0 by MCU reset.
Miscellaneous register (MIS: $00C)
Bit
Initial value
Read/Write
Bit name
3
0
W
MIS3
2
0
W
MIS2
1
0
W
MIS1
0
0
W
MIS0
MIS3
0
1
MIS2
0
1
Pull-up MOS on/off selection
Off
On
R2₃/SO PMOS on/off selection
On
Off
MIS1
0
MIS0
0
1
1
0
1
t_RC^*
0.12207 ms
0.24414 ms
7.8125 ms
31.25 ms
Not used
Note: * Refer to figure 18.
Figure 76 Miscellaneous Register (MIS)
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