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CHAPTER 12 WATCHDOG TIMER
Table 12.1-1 Interval Time of Watchdog Timer
Main
Clock cycle Examples calculated
External clock(@4MHz) CR oscillation
Min. Max. Min.
(@200kHz) Max.
(@50kHz)
214 ± 211
/HCLK
Approx.
3.58 ms Approx.
4.61 ms Approx.
0.072 s Approx.
0.369 s
216 ± 213
/HCLK
Approx.
14.33 ms Approx.
18.4 ms Approx.
0.287 s Approx.
1.475 s
218 ± 215
/HCLK
Approx.
57.34 ms Approx.
73.73 ms Approx.
1.147 s Approx.
5.898 s
221 ± 218
/HCLK
Approx.
458.75 ms Approx.
589.82 ms Approx.
9.175 s Approx.
47.186 s
Sub
Clock cycle Examples calculated
External clock
(@32kHz, 4-frequency division) CR oscillation
Min. Max. Min.
(@200kHz) Max.
(@50kHz)
212 ± 29
/SCLK
Approx.
0.437 s Approx.
0.563 s Approx.
0.018 s Approx.
0.092 s
215 ± 212
/SCLK
Approx.
3.500 s Approx.
4.500 s Approx.
0.143 s Approx.
0.737 s
216 ± 213
/SCLK
Approx.
7.000 s Approx.
9.000 s Approx.
0.287 s Approx.
1.475 s
217 ± 214
/SCLK
Approx.
14.000 s Approx.
18.000 s Approx.
0.573 s Approx.
2.949 s
Note: See "CHAPTER 6 CLOCK SUPERVISOR" for the CR oscillation.