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參數(shù)資料
| 型號： | DS1232 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | MicroMonitor Chip(微監(jiān)控芯片) |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封裝： | 0.300 INCH, DIP-8 |
| 文件頁數(shù)： | 1/7頁 |
| 文件大?。?/td> | 59K |
| 代理商： | DS1232 |
DS1232
MicroMonitor Chip
DS1232/DS1232S
050798 1/7
FEATURES
Halts and restarts an out–of–control microprocessor
Holds microprocessor in check during power
transients
Automatically restarts microprocessor after power
failure
Monitors pushbutton for external override
Accurate 5% or 10% microprocessor power supply
monitoring
Eliminates the need for discrete components
Space–saving, 8–pin mini–DIP
Optional 16–pin SOIC surface mount package
Industrial temperature –40
°
C to +85
°
C available,
designated N
PIN ASSIGNMENT
DS1232 8–PIN DIP
(300 MIL)
See Mech. Drawings
Section
VCC
ST
RST
RST
PBRST
TD
TOL
GND
NC
PBRST
NC
TD
NC
TOL
NC
GND
NC
VCC
NC
ST
NC
RST
NC
RST
DS1232S 16–PIN SOIC
(300 MIL)
See Mech. Drawings
Section
1
2
3
4
5
6
7
8
1
11
10
12
13
14
2
3
4
5
6
7
8
9
15
16
PIN DESCRIPTION
PBRST
TD
TOL
GND
RST
RST
ST
V
CC
NC
– Pushbutton Reset Input
– Time Delay Set
– Selects 5% or 10% V
CC
Detect
– Ground
– Reset Output (Active High)
– Reset Output (Active Low, open drain)
– Strobe Input
– +5 Volt Power
– No Connections
DESCRIPTION
The DS1232 MicroMonitor Chip monitors three vital
conditions for a microprocessor: power supply, software
execution, and external override. First, a precision tem-
perature–compensated reference and comparator cir-
cuit monitors the status of V
CC
. When an out–of–toler-
ance condition occurs, an internal power fail signal is
generated which forces reset to the active state. When
V
CC
returns to an in–tolerance condition, the reset sig-
nals are kept in the active state for a minimum of 250 ms
to allow the power supply and processor to stabilize.
The second function the DS1232 performs is pushbut-
ton reset control. The DS1232 debounces the pushbut-
ton input and guarantees an active reset pulse width of
250 ms minimum. The third function is a watchdog timer.
The DS1232 has an internal timer that forces the reset
signals to the active state if the strobe input is not driven
low prior to time–out. The watchdog timer function can
be set to operate on time–out settings of approximately
150 ms, 600 ms, and 1.2 seconds.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1232+ | 功能描述:監(jiān)控電路 MicroMonitor Chip 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 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1232G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Detector |
| DS1232GN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Detector |
| DS1232L | 制造商:Maxim Integrated Products 功能描述: |
| DS1232LP | 功能描述:監(jiān)控電路 Low Power MicroMonitor Chip 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 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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