HD404369 Datasheet, PDF (86/117 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer

HD404369 Series
Miscellaneous Register (MIS: $00C): This register has the following functions (figure 68).
• R0₂/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
3
2
1
Initial value
Read/Write
Bit name
0
W
MIS3
0
W
MIS2
0
W
MIS1
0
0
W
MIS0
MIS3
0
1
Pull-Up MOS
On/Off Selection
Pull-up MOS off
Pull-up MOS on
(refer to table 21)
MIS2
0
1
CMOS Buffer
On/Off Selection
for Pin R0₂/SO
PMOS active
PMOS off
MIS1
MIS0
t_RC selection.
Refer to figure 15 in the
operation modes section.
Figure 68 Miscellaneous Register (MIS)
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