參數(shù)資料
型號(hào)： MAX6726AKAYDD1+T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits
中文描述： 3-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8
封裝： LEAD FREE, MO-178, SOT-23, 8 PIN
文件頁(yè)數(shù)： 5/43頁(yè)
文件大?。?/td> 948K
代理商： MAX6726AKAYDD1+T
MAX6715A–MAX6729A
Dual/Triple, Ultra-Low-Voltage, SOT23 P
Supervisory Circuits
______________________________________________________________________________________
13
indicated (reset threshold overdrive). The graph shows
the maximum pulse width that a negative-going VCC
transient may typically have without causing a reset
pulse to be issued. As the amplitude of the transient
increases (i.e., goes farther below the reset threshold),
the maximum allowable pulse width decreases. A 0.1F
bypass capacitor mounted close to the VCC pin pro-
vides additional transient immunity.
Watchdog Software Considerations
Setting and resetting the watchdog input at different
points in the program, rather than “pulsing” the watch-
dog input high-low-high or low-high-low, helps the
watchdog timer to closely monitor software execution.
This technique avoids a “stuck” loop where the watch-
dog timer continues to be reset within the loop, keeping
the watchdog from timing out. Figure 6 shows an exam-
ple flow diagram where the I/O driving the watchdog
input is set high at the beginning of the program, set low
at the beginning of every subroutine or loop, then set
high again when the program returns to the beginning. If
the program should “hang” in any subroutine, the I/O is
continually set low and the watchdog timer is allowed to
time out, causing a reset or interrupt to be issued.
Chip Information
TRANSISTOR COUNT: 1072
PROCESS: BiCMOS
START
SET WDI
HIGH
PROGRAM
CODE
SUBROUTINE OR
PROGRAM LOOP
SET WDI LOW
RETURN
SUBROUTINE
COMPLETED
HANG IN
SUBROUTINE
Figure 6. Watchdog Flow Diagram
相關(guān)PDF資料
PDF描述
MAX6726AKAYDD2+T Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits
MAX6726AKAYDD3+ Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits
MAX6726AKAYDD4+T Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits
MAX6726AKAYDD5+T Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits
MAX6726AKAYDD6+T Dual/Triple Ultra-Low-Voltage SOT23 µP Supervisory Circuits
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6726AKAYDD2+T 功能描述:監(jiān)控電路 Triple uPower Supervisor 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
MAX6726AKAYDD3+ 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.188V/0.788V/ADJV 15UA 8PIN SOT-23 - Cut Tape Product
MAX6726AKAYDD3+T 功能描述:監(jiān)控電路 Triple uPower Supervisor 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
MAX6726AKAYDD4+T 功能描述:監(jiān)控電路 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
MAX6726AKAYDD5+T 功能描述:監(jiān)控電路 Triple uPower Supervisor 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
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