Fujitsu F2MCTM-16LX Hardware Manual page 213

Table 12.1-1 Interval Time of Watchdog Timer
Clock cycle
External clock(@4MHz)
Min.
14 ± 2 11
Approx.
2
3.58 ms
/HCLK
16 ± 2 13
Approx.
2
14.33 ms
/HCLK
18 ± 2 15
Approx.
2
57.34 ms
/HCLK
21 ± 2 18
Approx.
2
458.75 ms
/HCLK
Clock cycle
(@32kHz, 4-frequency division)
Min.
12 ± 2 9
Approx.
2
0.437 s
/SCLK
15 ± 2 12
Approx.
2
3.500 s
/SCLK
16 ± 2 13
Approx.
2
7.000 s
/SCLK
17 ± 2 14
Approx.
2
14.000 s
/SCLK
Note: See "CHAPTER 6 CLOCK SUPERVISOR" for the CR oscillation.
Main
Examples calculated
Max.
Approx.
4.61 ms
Approx.
18.4 ms
Approx.
73.73 ms
Approx.
589.82 ms
Sub
Examples calculated
External clock
Max.
Approx.
0.563 s
Approx.
4.500 s
Approx.
9.000 s
Approx.
18.000 s
CHAPTER 12 WATCHDOG TIMER
CR oscillation
Min. Max.
(@200kHz) (@50kHz)
Approx. Approx.
0.072 s 0.369 s
Approx. Approx.
0.287 s 1.475 s
Approx. Approx.
1.147 s 5.898 s
Approx. Approx.
9.175 s 47.186 s
CR oscillation
Min. Max.
(@200kHz) (@50kHz)
Approx. Approx.
0.018 s 0.092 s
Approx. Approx.
0.143 s 0.737 s
Approx. Approx.
0.287 s 1.475 s
Approx. Approx.
0.573 s 2.949 s
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