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| 型號(hào)： | DS1238A |
| 英文描述： | CAP 3.0UF 250VAC METALLIZED POLY |
| 中文描述： | 微管理器芯片 |
| 文件頁(yè)數(shù)： | 3/13頁(yè) |
| 文件大?。?/td> | 211K |
| 代理商： | DS1238A |
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DS1238A
3 of 13
DS1238A FUNCTIONAL BLOCK DIAGRAM
Figure 1
WATCHDOG TIMER
The DS1238A provides a watchdog timer function which forces the
WDS
, RST, and
RST
signals to the
active state when the strobe input (
ST
) is not stimulated for a predetermined time period. This time period
is described below in NO TAG. The watchdog timeout period begins as soon as RST and
RST
are
inactive. If a high-to-low transition occurs at the
ST
input prior to timeout, the watchdog timer is reset
and begins to timeout again. The
ST
input timing is shown in NO TAG. In order to guarantee that the
watchdog timer does not timeout, a high-to-low transition on
ST
must occur at or less than the minimum
timeout of the watchdog as described in the AC Electrical Characteristics. If the watchdog timer is
allowed to time out, the
WDS
, RST, and
RST
outputs are driven to the active state.
WDS
is a latched
signal which indicates the watchdog status, and is activated as soon as the watchdog timer completes a
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1238A-10 | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1238A-10+ | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1238A10N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| DS1238A-10N | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1238A-10N+ | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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