AT90USB82/162
.
Table 9-6.
Watchdog Timer Prescale Select, DIV = 0 (CLKwdt = CLK128 / 1)
Watchdog
Reset/Interrupt Typical
Time-out at
Number of WDT Oscillator
Cycles before 1st time-out
(Early warning)
Early warning Typical
Time-out at
WDP3
WDP2
WDP1
WDP0
VCC = 5.0V
V
CC = 5.0V
32 ms
64 ms
128 ms
0.250 s
0.5 s
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2K (2048) cycles
4K (4096) cycles
16 ms
32 ms
64 ms
0.125 s
0.25 s
0.5 s
8K (8192) cycles
16K (16384) cycles
32K (32768) cycles
64K (65536) cycles
128K (131072) cycles
256K (262144) cycles
512K (524288) cycles
1024K (1048576) cycles
1.0 s
1.0 s
2.0 s
2.0 s
4.0 s
4.0 s
8.0 s
8.0 s
16.0 s
Reserved
59
7707D–AVR–07/08
ATMEL [ ATMEL ]
