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參數(shù)資料
| 型號(hào)： | DS1233A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3.3V EconoReset(3.3V Econo復(fù)位芯片) |
| 中文描述： | 3.3V、經(jīng)濟(jì)型復(fù)位芯片 |
| 文件頁(yè)數(shù)： | 2/5頁(yè) |
| 文件大?。?/td> | 46K |
| 代理商： | DS1233A |
DS1233A
VCC
MICROPROCESSOR
RESET
PUSHBUTTON
CAPACITOR
RST
DS1233A
022698 2/5
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 approxi-
mately 350 ms after the power supply has reached the
selected tolerance. This allows the power supply and
microprocessor to stabilize before RST is released.
OPERATION – PUSHBUTTON RESET
The DS1233A provides for a pushbutton switch to be
connected to the RST output pin. When the DS1233A is
not in a reset cycle, it continuously monitors the RST
signal for a low going edge. If an edge is detected, the
DS1233A will debounce the switch by pulling the RST
line low. After the internal timer has expired, the
DS1233A will continue to monitor the RST line. If the
line is still low, the DS1233A will continue to monitor the
line looking for a rising edge. Upon detecting a release,
the DS1233A will force the RST line low and hold it low
for 350 ms.
NOTE:
For proper operation with an external push–but-
ton, a capacitor between 100 pF and 0.01
μ
F must be
connected between RST and ground. In applications
where additional reset current is required, a minimum
capacitance of 500 pF should be used, along with a par-
allel external pull–up resistor of 1K
minimum.
BLOCK DIAGRAM
Figure 1
VcAND BIAS
T.C. REFERENCE
350 ms
GROUND
MRST
RST
V
CC
APPLICATION EXAMPLE
Figure 2
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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 |
| 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 |
| 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 |
| 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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