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參數(shù)資料
| 型號(hào)： | AME8510AEEVAFE31 |
| 廠商： | AME, Inc. |
| 英文描述： | Micropower UP Watch Dog Timer |
| 中文描述： | 微向上看門狗定時(shí)器 |
| 文件頁數(shù)： | 10/13頁 |
| 文件大?。?/td> | 183K |
| 代理商： | AME8510AEEVAFE31 |
AME, Inc.
10
Micropower
μ
P Watch Dog Timer
AME8510 / 8520 / 8530
n
Detailed Description(contd.)
Watchdog Input Current
The watchdog input pin (WDI) typically sources/sinks
8
μ
A when driven high or low. So from a power dissipa-
tion point of view the duty cycle of the waveform at WDI
is unimportant. When the WDI pin is floating or tri-stated
the power supply current falls to less than 3.0
μ
A.
Glitch Rejection
The AME8510/8520/8530 family will reject negative go-
ing transients on the V
line to some extent. The smaller
the duration of the transient the larger its amplitude may
be without triggering a reset. The “Glitch Rejection” chart
in the graphs section of this datasheet shows the rela-
tion between glitch amplitude and allowable glitch dura-
tion to avoid unintended resets.
Accurate Output State at Low V
DD
With V
voltage on the order of the MOS transistor
threshold (<1.0V) the outputs of the AME8510/8520/8530
may become undefined. For parts with active low output
(RESETB) a resistor placed between RESETB and GND
on the order of 100K
will ensure that the RESETB out-
put stays low when V
is lower than the threshold volt-
age of the part. In a like manner a resistor on the order of
100K
when placed between RESET and V
will en-
sure parts with active high output (RESET) will remain
high when V
DD
is lower than the threshold voltage of the
part.
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