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参数资料
| 型号： | MCP111T-450E |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | Micropower Voltage Detector |
| 中文描述： | 微功耗电压检测器 |
| 文件页数： | 3/22页 |
| 文件大小： | 332K |
| 代理商： | MCP111T-450E |
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
相关PDF资料 |
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| MCP111T-450LB | Micropower Voltage Detector |
| MCP111T-450TT | Micropower Voltage Detector |
| MCP111T-475E | Micropower Voltage Detector |
| MCP111T-475LB | Micropower Voltage Detector |
| MCP111T-475TT | Micropower Voltage Detector |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP111T-450E/LB | 功能描述:监控电路 Open Drain RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MCP111T-450E/MB | 功能描述:监控电路 Open Drain RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MCP111T-450E/TT | 功能描述:监控电路 Open Drain RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MCP111T-450I/LB | 功能描述:监控电路 Open Drain RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MCP111T-450I/TT | 功能描述:监控电路 Open Drain RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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