GMS34004 Datasheet, PDF (24/105 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 2. Architecture
Pulse generator
The following frequency and duty ratio are selected for carrier signal outputted
from the REMOUT port depending on a PMR (Pulse Mode Register) value set in
a program.
T
T1
PMR
0
1
2
3
4
5
6
REMOUT signal
T=1/f_PUL = 12/f_OSC [96/f_OSC], T1/T = 1/2
T=1/f_PUL = 12/f_OSC [96/f_OSC], T1/T = 1/3
T=1/f_PUL = 8/f_OSC [64/f_OSC],
T1/T = 1/2
T=1/f_PUL = 8/f_OSC [64/f_OSC],
T1/T = 1/4
T=1/f_PUL = 11/f_OSC [88/f_OSC], T1/T = 4/11
No Pulse (same to D0~D9)
T=1/f_PUL = 12/f_OSC [96/f_OSC], T1/T = 1/4
* Default value is ¡È0¡È
* [ ] means the value of ¡ÈT¡È, when Instruction cycle is f_OSC/48
Table 2-2 PMR selection table
2- 7