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參數(shù)資料
| 型號(hào)： | DS1233A |
| 廠(chǎng)商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.3V EconoReset(3.3V EconoReset監(jiān)視器) |
| 中文描述： | 3.3V、經(jīng)濟(jì)型復(fù)位芯片 |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大小： | 60K |
| 代理商： | DS1233A |
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111899
FEATURES
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Internal circuitry debounces pushbutton
switch
Maintains reset for 350 ms after V
CC
returns
to an in-tolerance condition or pushbutton
released
Accurate 10% or 15% microprocessor 3.3V
power supply monitoring
Reduces need for discrete components
Precision temperature-compensated voltage
reference and voltage sensor
Low-cost TO-92 package or surface mount
SOT-223 package
Internal 5 k
=
pull-up resistor
Operating temperature of -40
°
C to +85
°
C
PIN ASSIGNMENT
PIN DESCRIPTION
PIN 1
PIN 2
PIN 3
PIN 4
GROUND
RESET
V
CC
GROUND (SOT-223 ONLY)
DESCRIPTION
The DS1233A EconoReset monitors two vital conditions for a microprocessor: power supply and external
override. A precision temperature-compensated reference and comparator circuit are used to monitor the
status of the power supply (V
CC
). When an out-of-tolerance condition is detected, 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 signal is kept in the active state for approximately 350 ms to allow the power supply and
processor to stabilize. The second function of the DS1233A is pushbutton reset control. The DS1233A
debounces a pushbutton closure and will generate a 350 ms reset pulse upon release.
OPERATION - POWER MONITOR
The DS1233A provides the functions of detecting out-of-tolerance power supply conditions and warning
a processor-based system of impending power failure. When V
CC
is detected as out of tolerance as
defined by the tolerance of the part selected, the
RST
signal is asserted. On power-up,
RST
is kept active
for approximately 350 ms after the power supply has reached the selected tolerance. This allows the
power supply and microprocessor to stabilize before
RST
is released.
DS1233A
3.3V EconoReset
www.dalsemi.com
1 2 3
1 2 3
TO-92 PACKAGE
See Mech.
Drawings Section
2
3
4
SOT-223 PACKAGE
See Mech.
Drawings Section
1
DALLAS
DS1233A
Econo
Reset
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1233A-10 | 功能描述:監(jiān)控電路 3.3V EconoReset 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(lèi)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 |
| DS1233A-10/T&R | 制造商:Maxim Integrated Products 功能描述:ECONO RESET 3.3V TO-92 (10%)-TRL - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC ECONORESET 3.3V 10% TO92-3 |
| DS1233A-10/T&R | 功能描述:監(jiān)控電路 3.3V EconoReset 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(lèi)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 |
| DS1233A-10+ | 功能描述:監(jiān)控電路 3.3V EconoReset 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(lèi)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 |
| DS1233A-10+T&R | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.88V 50UA 3PIN TO-92 - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC ECONORESET 3.3V 10% TO92-3 |
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