HD4074344 Datasheet, PDF (72/100 Pages) Hitachi Semiconductor – 4-bit microcomputers

HD404344R Series/HD404394 Series
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
MIS3
0
1
Pull-Up MOS
On/Off Selection
Pull-up MOS off
Pull-up MOS on
MIS2
0
1
PMOS On/Off
Selection for Pin R0₂/SO
On
Off
Programming MIS1 and MIS0 to 1 is prohibited.
Figure 51 Miscellaneous Register
72