GMS36 Datasheet, PDF (40/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

Chapter 4. FUNCTIONAL DESCRIPTION
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
REMOUT signal
0
T=1/f_PUL = 12/f_OSC [96/f_OSC], T1/T = 1/2
1
T=1/f_PUL = 12/f_OSC [96/f_OSC], T1/T = 1/3
2
T=1/f_PUL = 8/f_OSC [64/f_OSC], T1/T = 1/2
3
T=1/f_PUL = 8/f_OSC [64/f_OSC], T1/T = 1/4
4
T=1/f_PUL = 11/f_OSC [88/f_OSC], T1/T = 4/11
5
No Pulse (same to D0 ~ D9)
6
T=1/f_PUL = 12/f_OSC [96/f_OSC], T1/T = 1/4
7
No pulse (same to D0 ~ D9)
* Default value is "0"
* [ ] means the value of "T", when Instruction cycle is f_OSC/48 in MHz version
Table 4-2 PMR selection table
4-7