HD404339 Datasheet, PDF (37/80 Pages) Hitachi Semiconductor – 4-bit HMCS400-Series microcomputer with large-capacity memory

Miscellaneous register (MIS: $00C)
Bit
3
2
1
Initial value
0
0
0
Read/Write
Bit name
W
MIS3
W
MIS2
W
MIS1
0
0
W
MIS0
HD404339 Series
MIS3
0
1
Pull-Up MOS
On/Off Selection
Pull-up MOS off
Pull-up MOS on
(refer to table 5)
MIS2
0
1
CMOS Buffer
On/Off Selection
for Pin R0₂/SO
CMOS on
CMOS off
MIS1
MIS0
t_RC selection.
Refer to figure 14 in the
operation modes section.
Note: The on/off status of each transistor and the peripheral function mode of each pin can be
set independently.
Figure 25 Miscellaneous Register
35