参数资料
型号: R5F2L3AACDFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP100
封装: 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件页数: 43/74页
文件大小: 959K
代理商: R5F2L3AACDFP
49
2588F–AVR–06/2013
ATtiny261/461/861
Bits 5, 2:0 – WDP3:0: Watchdog Timer Prescaler 3, 2, 1, and 0
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
Notes:
1. If selected, one of the valid settings below 0b1010 will be used.
Table 8-3.
Watchdog Timer Prescale Select
WDP3
WDP2
WDP1
WDP0
Number of WDT Oscillator
Cycles
Typical Time-out at
VCC = 5.0V
0
2K (2048) cycles
16 ms
0
1
4K (4096) cycles
32 ms
0
1
0
8K (8192) cycles
64 ms
0
1
16K (16384) cycles
0.125 s
0
1
0
32K (32764) cycles
0.25 s
0
1
0
1
64K (65536) cycles
0.5 s
0
1
0
128K (131072) cycles
1.0 s
0
1
256K (262144) cycles
2.0 s
1
0
512K (524288) cycles
4.0 s
1
0
1
1024K (1048576) cycles
8.0 s
101
0
Reserved(1)
101
1
110
0
110
1
111
0
111
1
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