參數(shù)資料
型號(hào)： MAX807MCUE
廠(chǎng)商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 電源管理
英文描述： Full-Featured uP Supervisory Circuit with +/-1.5% Reset Accuracy
中文描述： 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16
封裝： TSSOP-16
文件頁(yè)數(shù)： 8/16頁(yè)
文件大小： 196K
代理商： MAX807MCUE
Detailed Description
The MAX807 μP supervisory circuit provides power-
supply monitoring, backup-battery switchover, and pro-
gram execution watchdog functions in μP systems
(Figure 1). Use of BiCMOS technology results in an
improved 1.5% reset-threshold precision, while keeping
supply currents typically below 70μA. The MAX807 is
intended for battery-powered applications that require
high reset-threshold precision, allowing a wide power-
supply operating range while preventing the system
from operating below its specified voltage range.
RESET and RESET Outputs
The MAX807’s RESET output ensures that the μP pow-
ers up in a known state, and prevents code execution
errors during power-down and brownout conditions. It
accomplishes this by resetting the μP, terminating pro-
gram execution when V
CC
dips below the reset thresh-
old or MR is pulled low. Each time RESET is asserted it
stays low for the 200ms reset timeout period, which is
set by an internal timer to ensure the μP has adequate
time to return to an initial state. Any time V
CC
goes
below the reset threshold before the reset-timeout peri-
od is completed, the internal timer restarts. The watch-
dog timer can also initiate a reset if WDO is connected
to MR (see the
Watchdog Input
section).
M
Full-Featured μP Supervisory Circuit with
±1.5% Reset Accuracy
8
_______________________________________________________________________________________
MAX807
CE IN
PFI
GND
V
CC
BATT
V
CC
THE HIGHER
OF V
CC
OR V
BATT
BATTERY-BACKUP
COMPARATOR
RESET
COMPARATOR
LOW-LINE
COMPARATOR
BATTERY-OK
COMPARATOR
POWER-FAIL
COMPARATOR
2.275V
P
OUT
BATT ON
LOW LINE
BATT OK
PFO
WDI
MR
RESET
50k
RESET
WDO
CE OUT
N
P
P
N
WATCHDOG
TRANSITION
DETECTOR
STATE
MACHINE
OSCILLATOR
Figure 1. Block Diagram
相關(guān)PDF資料
PDF描述
MAX810 3-Pin Microprocessor Reset Circuits(3管腳微處理器復(fù)位監(jiān)視器)
MAX809 3-Pin Microprocessor Reset Circuits(3管腳微處理器復(fù)位監(jiān)視器)
MAX811 4-Pin μP Reset Monitor(3腳μP監(jiān)控電路復(fù)位監(jiān)視器（低電平復(fù)位）)
MAX812 4-Pin μP Reset Monitor(3腳μP監(jiān)控電路復(fù)位監(jiān)視器（高電平復(fù)位）)
MAX812_EUS-T 4-Pin レP Voltage Monitors with Manual Reset Input
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX807MCUE+ 功能描述:監(jiān)控電路 Full-Featured 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(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
MAX807MCUE+T 功能描述:監(jiān)控電路 Full-Featured 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(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
MAX807MCUE-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(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
MAX807MCWE 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(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
MAX807MCWE+ 功能描述:監(jiān)控電路 Full-Featured 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(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
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