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RL78/G1P
CHAPTER 8 WATCHDOG TIMER
R01UH0895EJ0100 Rev.1.00
239
Nov 29, 2019
The window open period can be set is as follows.
Table 8-4. Setting Window Open Period of Watchdog Timer
WINDOW1
WINDOW0
Window Open Period of Watchdog Timer
0 0
Setting
prohibited
0 1
50%
1 0
75%
1 1
100%
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
9
/f
IL
, the window close time and open time are as follows.
Setting of Window Open Period
50% 75% 100%
Window close time
0 to 20.08 ms
0 to 10.04 ms
None
Window open time
20.08 to 29.68 ms
10.04 to 29.68 ms
0 to 29.68 ms
<When window open period is 50%>
Overflow time:
2
9
/f
IL
(MAX.) = 2
9
/17.25 kHz = 29.68 ms
Window close time:
0 to 2
9
/f
IL
(MIN.)
(1
0.5) = 0 to 2
9
/12.75 kHz
0.5 = 0 to 20.08 ms
Window open time:
2
9
/f
IL
(MIN.)
(1
0.5) to 2
9
/f
IL
(MAX.)
= 2
9
/12.75 kHz
0.5 to 2
9
/17.25 kHz = 20.08 to 29.68 ms
Summary of Contents for RL78/G1P
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