Renesas RL78/G1P Hardware User Manual page 258

RL78/G1P
The window open period can be set is as follows.
WINDOW1
0
0
1
1
Caution When bit 0 (WDSTBYON) of the option byte (000C0H) = 0, the window open period is 100% regardless
of the values of the WINDOW1 and WINDOW0 bits.
Remark If the overflow time is set to 2
Window close time
Window open time
<When window open period is 50%>
 Overflow time:
9
2 /f (MAX.) = 2
IL
 Window close time:
9
0 to 2 /f
 Window open time:
(MIN.)  (1  0.5) to 2
9
2 /f
IL
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Table 8-4. Setting Window Open Period of Watchdog Timer
WINDOW0
0 Setting prohibited
1 50%
0 75%
1 100%
9
/f , the window close time and open time are as follows.
IL
50%
0 to 20.08 ms
20.08 to 29.68 ms
9
/17.25 kHz = 29.68 ms
(MIN.)  (1  0.5) = 0 to 2
IL
9
/f (MAX.) = 2
IL
Window Open Period of Watchdog Timer
Setting of Window Open Period
75%
0 to 10.04 ms
10.04 to 29.68 ms
/12.75 kHz  0.5 = 0 to 20.08 ms
9
/12.75 kHz  0.5 to 2
9
CHAPTER 8 WATCHDOG TIMER
100%
None
0 to 29.68 ms
9
/17.25 kHz = 20.08 to 29.68 ms
239