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參數資料
| 型號： | DS1233A |
| 英文描述： | 3.3V EconoReset |
| 中文描述： | 3.3V、經濟型復位芯片 |
| 文件頁數： | 1/5頁 |
| 文件大?。?/td> | 121K |
| 代理商： | DS1233A |
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122001
FEATURES
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Internal circuitry debounces pushbutton
switch
Maintains reset for 350ms 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 5k
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 350ms 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 350ms 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 350ms 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.maxim-ic.com
1 2 3
1 2 3
BOTTOM VIEW
TO-92 PACKAGE
See Mech.
Drawings Section
on Website
2
TOP VIEW
SOT-223 PACKAGE
See Mech.
Drawings Section
on Website
3
4
1
DALLAS
DS1233A
Econo
Reset
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1233A-10 | 功能描述:監控電路 3.3V EconoReset RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關: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 |
| 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:監控電路 3.3V EconoReset RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關: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 |
| DS1233A-10+ | 功能描述:監控電路 3.3V EconoReset RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關: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 |
| 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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