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參數(shù)資料
| 型號(hào)： | MCP111T-475LB |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Micropower Voltage Detector |
| 中文描述： | 微功耗電壓檢測(cè)器 |
| 文件頁(yè)數(shù)： | 3/22頁(yè) |
| 文件大?。?/td> | 332K |
| 代理商： | MCP111T-475LB |
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2004 Microchip Technology Inc.
DS21889B-page 11
MCP111/112
4.0
APPLICATION INFORMATION
For many of today’s microcontroller applications, care
must be taken to prevent low-power conditions that can
cause many different system problems. The most
common causes are brown-out conditions, where the
system supply drops below the operating level momen-
tarily. The second most common cause is when a slowly
decaying power supply causes the microcontroller to
begin executing instructions without sufficient voltage to
sustain SRAM, thus producing indeterminate results.
Figure 4-1 shows a typical application circuit.
FIGURE 4-1:
Typical Application Circuit.
4.1
V
TRIP Operation
The voltage trip point (V
TRIP) is determined on the falling
edge of V
DD. The actual voltage trip point (VTRIPAC) will
be between the minimum trip point (V
TRIPMIN) and the
maximum trip point (V
TRIPMAX). There is a hysteresis on
this trip point to remove any “jitter” that would occur on
the V
OUT pin when the device VDD is at the trip point.
Figure 4-2 shows the state of the V
OUT pin as deter-
mined by the V
DD voltage. The VTRIP specification is for
falling V
DD voltages. When the VDD voltage is rising, the
V
OUT pin will not be driven high until VDD is at VTRIP +
V
HYS.
FIGURE 4-2:
VOUT Operation as Determined by the VTRIP and VHYS.
2
MCP11X
VDD
VOUT
MCLR
(Reset Input)
VSS
GND
PICmicro
Microcontroller
3
1
RPU
Note 1: RPU may be required with the MCP111
due to the open-drain output. Resistor
RPU is not required with the MCP112.
0.1
F
VDD
VTRIPMAX
VTRIPMIN
VTRIPAC
VTRIPAC + VHYSAC
VOUT
1V
< 1 V is outside the
device specifications
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP111T-475TT | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:Micropower Voltage Detector |
| MCP112 | 制造商:MICROCHIP 制造商全稱(chēng):Microchip Technology 功能描述:Micropower Voltage Detector |
| MCP112-195I/MB | 制造商:Microchip Technology Inc 功能描述:VOLT SUPERVISOR DETECT 1.9V 4P - Rail/Tube |
| MCP112-195I/TO | 功能描述:監(jiān)控電路 1uA Sup P-P Act Low 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 |
| MCP112-240E/MB | 制造商:Microchip Technology Inc 功能描述:VOLT SUPERVISOR DETECT 2.32V 4 - Rail/Tube |
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