HD4074344 Datasheet, PDF (69/100 Pages) Hitachi Semiconductor – 4-bit microcomputers

Port mode register C (PMRC: $025)
HD404344R Series/HD404394 Series
Bit
Initial value
Read/Write
Bit name
3
2
1
0
—
— Undefined 0
—
—
W
W
Not used Not used PMRC1 PMRC0
PMRC0
0
1
Transmit Clock Division Ratio
Prescaler output divided by 2
Prescaler output divided by 4
PMRC1
0
1
Output Level Control in Idle States
Low level
High level
Figure 46 Port Mode Register C (PMRC)
69