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| 型号： | ADM1060ARUZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/52页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVSR/SEQUENCR 7CH 28TSSOP |
| 标准包装： | 1,000 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 7 |
| 输出： | 可编程 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 带卷 (TR) |
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ADM1060
WATCHDOG FAULT DETECTOR
The ADM1060 has a watchdog fault detector. This can be used
to monitor a processor clock to ensure normal operation. The
detector monitors the WDI pin, expecting a low-to-high or
high-to-low transition within a preprogrammed period. The
watchdog timeout period can be programmed from 200 ms to a
maximum of 12.8 sec.
If no transition is detected, two signals are asserted. One is a
latched high signal, indicating a fault has occurred. The other
signal is a low-high-low pulse that can be used as a RESET sig-
nal for a processor core. The width of this pulse can be
programmed from 10 μs to a maximum of 10 ms. These two
Table 20. Watchdog Fault Detector Registers
watchdog signals can be selected as inputs to each of the PLBs
(see the PLBA section). They can also be inverted, if required;
for example, if a high-low-high pulse were required by a proces-
sor to reset. Thus, a fault on the watchdog can be used to
generate a pulsed or latched output on any or all of the nine
PDOs.
The latched signal can be cleared low by reading LATF1, then
LATF2 across the SMBus interface (see the Fault Registers sec-
tion). The RAM register list and the bit map for the watchdog
fault detector are shown below.
Hex Address
9C
Table
Name
WDCFG
Default Power-On Value
0x00
Description
Program Length Watchdog Timeout and Length of Pulsed Output
Table 21. WDCFG Register 0x9C (Power-On Default 0x00)
Bit
7?5
Name
Reserved
R/W
R/W
Description
Unused
4?3
PULS1?PULS0
R/W
Length of Pulse Output once
PULS1
PULS0
Pulse Length Selected (μs)
the Watchdog Detector has
Timed Out
0
0
1
1
0
1
0
1
10
100
1,000
10,000
2–0
PER2?PER0
R/W
Watchdog Timeout Period
PER2
PER1
PER0 Watchdog Timeout Selected (ms)
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0 Disabled
1 200
0 400
1 800
0 1,600
1 3,200
0 6,400
1 12,800
Rev. B | Page 18 of 52
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