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參數(shù)資料
| 型號(hào)： | TPS3306-20DGKRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁(yè)數(shù)： | 12/17頁(yè) |
| 文件大?。?/td> | 462K |
| 代理商： | TPS3306-20DGKRG4 |
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RESET Because of
Power-Down
RESET Because of WDI
RESET Because of a Power Drop Below VIT–
RESET Because of Power-Up
tt(out)
SENSEn
V(nom)
VIT
1.1 V
WDI
1
0
RESET
1
0
Undefined
Behavior
Undefined
Behavior
DETAILED DESCRIPTION
Watchdog
SLVS290C – APRIL 2000 – REVISED DECEMBER 2006
TIMING DIAGRAM
Table 4. Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
GND
4
I
Ground
PFI
3
I
Power-fail comparator input
PFO
6
O
Power-fail comparator output, open-drain
RESET
5
O
Active-low reset output, open-drain
SENSE1
1
I
Sense voltage input 1
SENSE2
2
I
Sense voltage input 2
WDI
7
I
Watchdog timer input
VDD
8
I
Supply voltage
In a microprocessor- or DSP-based system, it is not only important to supervise the supply voltage, it is also
important to ensure 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 DSP typically has to toggle the watchdog
input within 0.8 s to avoid a time-out occurring. Either a low-to-high or a high-to-low transition resets the internal
watchdog timer. If the input is unconnected or tied with a high impedance driver, the watchdog is disabled and
will be retriggered internally.
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS3306-20DKG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS3306-20DKGR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| TPS3306-20DR | 功能描述:監(jiān)控電路 Dual-Processor with Power-Fail 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(kāi)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 |
| TPS3306-20DRG4 | 功能描述:監(jiān)控電路 Dual-Processor with Power-Fail 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(kāi)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 |
| TPS3306-20-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL PROCESSOR SUPERVISORY CIRCUITS WITH POWER FAIL |
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