- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384704 > MAX807_EPE (Maxim Integrated Products, Inc.) Full-Featured レP Supervisory Circuit with 【1.5eset Accuracy PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX807_EPE |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Full-Featured レP Supervisory Circuit with 【1.5eset Accuracy |
| 中文描述： | 全功能レP監(jiān)控電路與精度【1.5eset |
| 文件頁數(shù)： | 8/16頁 |
| 文件大小： | 116K |
| 代理商： | MAX807_EPE |
_______________Detailed Desc ription
The MAX807 microprocessor (μP) supervisory circuit
provides power-supply monitoring, backup-battery
switchover, and program 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 applica-
tions that require high reset-threshold precision, allow-
ing a wide power-supply operating range while
preventing the system from operating below its speci-
fied voltage range.
RES ET and RES ET 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 Inputsection.
M
Full-Featured μP S upervisory Circ uit with
±1.5% Reset Ac c urac y
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 |
|---|---|
| MAX807_EWE | Full-Featured レP Supervisory Circuit with 【1.5eset Accuracy |
| MAX807_MJE | Full-Featured レP Supervisory Circuit with 【1.5eset Accuracy |
| MAX810SN293D2T1G | Rectifier Diodes; Mounting style: Surface mount; Package size: 2.9x1.6(t=1.0); Number of terminal: 5; Application: General Purpose Rectifier Diodes; Repetitive peak reverse voltage VRM(V): 400; Average rectified forward current IO(A): 0.5; |
| MAX810SN293D3T1G | Very Low Supply Current 3−Pin Microprocessor Reset Monitors |
| MAX810SQ120T1G | Very Low Supply Current 3−Pin Microprocessor Reset Monitors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX807L | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Full-Featured レP Supervisory Circuit with 【1.5eset Accuracy |
| MAX807LCPE | 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 |
| MAX807LCPE+ | 功能描述:監(jiān)控電路 Full-Featured uPower Supervisor 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 |
| MAX807LCUE | 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 |
| MAX807LCUE+ | 功能描述:監(jiān)控電路 Full-Featured uPower Supervisor 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)。