- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄365924 > TPS3613-50DGST Analog IC PDF資料下載
參數(shù)資料
| 型號： | TPS3613-50DGST |
| 英文描述： | Analog IC |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 214K |
| 代理商： | TPS3613-50DGST |
TPS3600D20, TPS3600D33, TPS3600D50
BATTERY-BACKUP SUPERVISORS FOR LOW-POWER PROCESSORS
SLVS336 – DECEMBER 2000
10
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
detailed description (continued)
watchdog
In a microprocessor- or DSP-based system, it is not only important to supervise the supply voltage, it is also
important to ensure the correct program execution. The task of a watchdog is to ensure that the program is not
stalled in an indefinite loop. The microprocessor, microcontroller, or the DSP have to toggle the watchdog input
within typically 0.8 s to avoid a time-out from occurring. Either a low-to-high or a high-to-low transition resets
the internal watchdog timer. If the input is unconnected the watchdog is disabled and will be retriggered
internally.
saving current while using the watchdog
The watchdog input is internally driven low during the first 7/8 of the watchdog time-out period, then momentarily
pulses high, resetting the watchdog counter. For minimum watchdog input current (minimum overall power
consumption), leave WDI low for the majority of the watchdog time-out period, pulsing it low-high-low once
within 7/8 of the watchdog time-out period to reset the watchdog timer. If instead, WDI is externally driven high
for the majority of the time-out period, a current of e.g. 5 V/40 k
≈
125
μ
A can flow into WDI.
VIT
WDI
RESET
td
td
Time-Out
VOUT
VBAT
Figure 5. Watchdog Timing
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS3617-50 | Battery-Backup Supervisors for RAM Retention |
| TPS3600D20PWR | Analog IC |
| TPS3600D33PWR | Analog IC |
| TPS3809I50DBVR | Analog IC |
| TPS3809I50DBVT | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS3617 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:BATTERY-BACKUP SUPERVISOR FOR RAM RETENTION |
| TPS3617-50 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Battery-Backup Supervisors for RAM Retention |
| TPS3617-50DGK | 功能描述:監(jiān)控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 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 |
| TPS3617-50DGK | 制造商:Texas Instruments 功能描述:BATTERY-BACKUP SVS FOR RAM RETEN |
| TPS3617-50DGKG4 | 功能描述:監(jiān)控電路 Battery-Backup for RAM Retention RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。