ATTINY861A-MU Atmel, ATTINY861A-MU Datasheet - Page 47
ATTINY861A-MU
Manufacturer Part Number
ATTINY861A-MU
Description
NO NEW DESIGNS, USE TINY861A-XU - 20MHZ, QFN/MLF, IND TEMP,
Manufacturer
Atmel
Datasheet
1.ATTINY861A-XU.pdf
(292 pages)
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8197B–AVR–01/10
The WDP3:0 bits determine the Watchdog Timer prescaling when the Watchdog Timer is
enabled. The different prescaling values and their corresponding Timeout Periods are shown in
Table
Table 8-3.
Notes:
WDP3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
8-3.
1. If selected, one of the valid settings below 0b1010 will be used.
WDP2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Watchdog Timer Prescale Select
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
1024K (1048576) cycles
128K (131072) cycles
256K (262144) cycles
512K (524288) cycles
16K (16384) cycles
32K (32764) cycles
64K (65536) cycles
2K (2048) cycles
4K (4096) cycles
8K (8192) cycles
Cycles
Reserved
(1)
Typical Time-out at
V
CC
0.125 s
16 ms
32 ms
64 ms
0.25 s
0.5 s
1.0 s
2.0 s
4.0 s
8.0 s
= 5.0V
47
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