AT90USB82 Datasheet, PDF (61/306 Pages) ATMEL Corporation – 8-bit Microcontroller with 8/16K Bytes of ISP Flash

AT90USB82/162
Table 9-8. Watchdog Timer Prescale Select, DIV = 2 (CLKwdt = CLK128 / 5)
WDP3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
WDP2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
WDP1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
WDP0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Number of WDT Oscillator
Cycles before 1st time-out
(Early warning)
2K (2048) cycles
4K (4096) cycles
8K (8192) cycles
16K (16384) cycles
32K (32768) cycles
64K (65536) cycles
128K (131072) cycles
256K (262144) cycles
512K (524288) cycles
1024K (1048576) cycles
Early warning Typical
Time-out at
V_CC = 5.0V
80 ms
160 ms
320 ms
0.625 s
1.25 s
2.5 s
5s
10 s
20 s
40 s
Reserved
Watchdog
Reset/Interrupt Typical
Time-out at
V_CC = 5.0V
160 ms
320 ms
640 ms
1.25 s
2.5 s
5s
10 s
20 s
40 s
80 s
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7707D–AVR–07/08