参数资料
型号: AT83EB5114XXXTGRIL
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: Low-pin-count 8-bit microcontroller with A/D converter
中文描述: 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PDSO20
封装: SO-20
文件页数: 55/95页
文件大小: 1126K
代理商: AT83EB5114XXXTGRIL
55
4311A–8051–01/05
Figure 25.
WDTPRG Register
WDTPRG - WatchDog Timer Duration Programming register (A7h).
Reset Value = XXXX X000b
The three lower bits (S0, S1, S2) located into WDTPRG register permit to program the
WDT duration.
To compute WD Time-Out, the following formula is applied:
Note:
Note: Value represents the decimal value of (S2 S1 S0) / CKRL represents the Prescaler
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2
S2
WatchDog Timer Duration selection bit 2
Work in conjunction with bit 1 and bit 0.
1
S1
WatchDog Timer Duration selection bit 1
Work in conjunction with bit 2 and bit 0.
0
S0
WatchDog Timer Duration selection bit 0
Work in conjunction with bit 1 and bit 2.
S2
S1
S0
Machine Cycle Count
0
0
0
2
14
- 1
0
0
1
2
15
- 1
0
1
0
2
16
- 1
0
1
1
2
17
- 1
1
0
0
2
18
- 1
1
0
1
2
19
- 1
1
1
0
2
20
- 1
1
1
1
2
21
- 1
TimeOut
2
)
x
2
1
)
)
x
2
15
(
12
2
×
(
)
(
CKRL
)
×
×
-------------------------------FclkPeriph
=
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