參數(shù)資料
型號： MAX6872ETJ
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors with Charge-Pump Outputs
中文描述： 6-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC32
封裝： 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-32
文件頁數(shù)： 36/48頁
文件大?。?/td> 374K
代理商： MAX6872ETJ
MAX6872/MAX6873
EEPROM-Programmable, Hex/Quad,
Power-Supply Sequencers/Supervisors
______________________________________________________________________________________
41
programmable outputs) connects to the reset input or a
nonmaskable interrupt of the P.
Registers 3Ch–3Fh configure the watchdog functionality
of the MAX6872/MAX6873. Program each watchdog
timer to assert one or more programmable outputs (see
Tables 8–19). Program each watchdog timer to reset on
one of the GPI_ inputs, one of the programmable out-
puts, or a combination of one GPI_ input and one pro-
grammable output.
Each watchdog timer features independent initial and
normal watchdog timeout periods. The initial watchdog
timeout period applies immediately after power-up, after a
reset event takes place, or after enabling the watchdog
timer. The initial watchdog timeout period allows the P to
perform its initialization process. If no pulse occurs during
the initial watchdog timeout period, the P is taking too
long to initialize, indicating a potential problem.
The normal watchdog timeout period applies in every
other cycle after the initial watchdog timeout period
occurs. The normal watchdog timeout period monitors
a pulsed output of the P that indicates when normal
processor behavior occurs. If no pulse occurs during
the normal watchdog timeout period, this indicates that
the processor has stopped operating or is stuck in an
infinite execution loop.
Disable or enable each initial timeout period through reg-
isters 3Ch and 3Eh. Registers 3Dh and 3Fh program the
initial and normal watchdog timeout periods, and enable
or disable each watchdog timer. See Tables 25 and 26
for a summary of the watchdog behavior.
Fault Detector
Registers 60h–62h store all fault conditions, including
undervoltage, overvoltage, GPI_, and watchdog timer
faults (see Table 27). Fault registers are read-only and
lose contents upon power removal. The first read com-
mand from the fault registers after power-up gives invalid
data. Any MR assertion writes to the fault register.
Reading the fault register clears all fault flags. Both GPI_
and WD_ bits assert if any of the GPI_ inputs are config-
ured as watchdog inputs (WD_) and a watchdog fault
occurs.
Table 25. Watchdog Inputs (Addresses 3Ch (Watchdog 1), 3Eh (Watchdog 2))
REGISTER
ADDRESS
EEPROM MEMORY
ADDRESS
BIT
RANGE
DESCRIPTION
[1:0]
Watchdog Input Selection:
00 = GPI1
01 = GPI2
10 = GPI3
11 = GPI4
[4:2]
Watchdog Internal Input Selection:
000 = PO1 (MAX6872), not used (MAX6873)
001 = PO2 (MAX6872), not used (MAX6873)
010 = PO3 (MAX6872), PO1 (MAX6873)
011 = PO4 (MAX6872), PO2 (MAX6873)
100 = PO5 (MAX6872), PO3 (MAX6873)
101 = PO6 (MAX6872), PO4 (MAX6873)
110 = PO7 (MAX6872), PO5 (MAX6873)
111 = PO8 (MAX6872), not used (MAX6873)
[6:5]
Watchdog Dependency on Inputs:
00 = 11 = Watchdog clear depends on both GPI_ from 3Ch[1:0]
(watchdog 1) or 3Eh[1:0] (watchdog 2) and PO_ from 3Ch[4:2]
(watchdog 1) or 3Eh[4:2] (watchdog 2).
01 = watchdog clear depends only on PO_ from 3Ch[4:2] (watchdog 1)
or 3Eh[4:2] (watchdog 2).
10 = watchdog clear depends only on GPI_ from 3Ch[1:0] (watchdog 1)
or 3Eh[1:0] (watchdog 2).
3Ch (watchdog 1)
3Eh (watchdog 2)
803Ch (watchdog 1)
803Eh (watchdog 2)
[7]
Initial Watchdog Timeout Period Enable:
0 = Disables initial watchdog timeout period (normal watchdog timeout
period not affected).
1 = Enables initial watchdog timeout period.
相關(guān)PDF資料
PDF描述
MAX6873ETJ EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors with Charge-Pump Outputs
MAX6874ETJ EEPROM-Programmable, Hex/Quad, Power-Supply Sequencers/Supervisors
MAX6876ETX EEPROM-Programmable, Quad, Power-Supply Tracker/Sequencer Circuit
MAX6884ETP EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC
MAX6884ETP-T EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6872ETJ+ 功能描述:監(jiān)控電路 EEPROM-Prog Hex Power-Sup Sequencer 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
MAX6872ETJ+T 功能描述:監(jiān)控電路 EEPROM-Prog Hex Power-Sup Sequencer 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
MAX6872ETJ-T 功能描述:監(jiān)控電路 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
MAX6873ETJ 功能描述:監(jiān)控電路 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
MAX6873ETJ+ 功能描述:監(jiān)控電路 EEPROM-Prog Quad Power-Sup Sequencer 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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*