Philips P89LPC907 用户手册
Philips Semiconductors
User’s Manual - Preliminary -
P89LPC906/907/908
WATCHDOG TIMER
82
Table 12-2: P89LPC906/907/908 Watchdog Timeout Values
PRE2-PRE0
WDL in decimal)
Timeout Period
(in watchdog clock
cycles)
Watchdog Clock Source
400KHz Watchdog Oscillator Clock
(Nominal)
12MHz CCLK (6MHz CCLK/2
Watchdog Clock)
000
0
33
82.5µs
5.50µs
255
8,193
20.5ms
1.37ms
001
0
65
162.5µs
10.8µs
255
16,385
41.0ms
2.73ms
010
0
129
322.5µs
21.5µs
255
32,769
81.9ms
5.46ms
011
0
257
642.5µs
42.8µs
255
65,537
163.8ms
10.9ms
100
0
513
.1.28ms
85.5µs
255
131,073
327.7ms
21.8ms
101
0
1,025
2.56ms
170.8µs
255
262,145
655.4ms
43.7ms
110
0
2,049
5.12ms
341.5µs
255
524,289
1.31s
87.4ms
111
0
4097
10.2ms
682.8µs
255
1,048,577
2.62s
174.8ms