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參數(shù)資料
| 型號： | STM6822SAWY6E |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5-pin Supervisor with watchdog timer and push-button reset |
| 中文描述： | 5引腳看門狗定時器和按鈕復(fù)位監(jiān) |
| 文件頁數(shù)： | 10/26頁 |
| 文件大?。?/td> | 149K |
| 代理商： | STM6822SAWY6E |
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Operation
STM6321/6322STM6821/6822/6823/6824/6825
10/26
2
Operation
2.1
Reset output
The STM6xxx Supervisor asserts a reset signal to the MCU whenever V
CC
goes below the
reset threshold (V
RST
), a watchdog time-out occurs, or when the Push-button Reset Input
(MR) is taken low. Reset is guaranteed valid for V
CC
< V
RST
down to V
CC
=1V for T
A
= 0°C
to 85°C.
During power-up, once V
CC
exceeds the reset threshold an internal timer keeps reset low
for the reset time-out period, t
rec
. After this interval reset is de-asserted.
Each time RST is asserted, it stays low for at least the reset time-out period (t
rec
). Any time
V
CC
goes below the reset threshold the internal timer clears. The reset timer starts when
V
CC
returns above the reset threshold.
2.2
Open drain RST output
The STM6321/6322/6822 have an active-low, open drain reset output. This output structure
will sink current when RST is asserted. Connect a pull-up resistor from RST to any supply
voltage up to 6V (see
Figure 11
). Select a resistor value large enough to register a logic low,
and small enough to register a logic high while supplying all input current and leakage paths
connected to the reset output line. A 10k
Ω
pull-up resistor is sufficient in most applications.
Figure 11.
STM6321/6322/6822 open drain RST output with multiple supplies
1.
2.
3.
STM6322/6822
STM6321/6822
STM6321/6322
AI09137
STM6XXX
RST
MR
(1)
WDI
(2)
RST
(3)
GND
10k
V
CC
5V System
5.0V
3.3V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STM6822SWY6F | 功能描述:監(jiān)控電路 2.850 to 3.000VRST Watchdog/Manual Inpt 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 |
| STM6822TWY6F | 功能描述:監(jiān)控電路 SUPERVISOR WATCHDOG 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 |
| STM6822TWY6F-CUT TAPE | 制造商:ST 功能描述:STM6822 Series 3.08 V 140 ms Supervisor with Watchdog Timer & Push-Button Reset |
| STM6822YWY6F | 功能描述:監(jiān)控電路 5PIN SUPERVISOR 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 |
| STM6822ZWY6F | 功能描述:監(jiān)控電路 5PIN SUPERVISOR 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 |
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