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| 型号： | MCP111-450E/TO |
| 厂商： | Microchip Technology |
| 文件页数： | 12/26页 |
| 文件大小： | 0K |
| 描述： | IC VOLT DET 4.38V LOW TO-92 |
| 标准包装： | 1,000 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 开路漏极或开路集电极 |
| 复位： | 低有效 |
| 电压 - 阀值： | 4.38V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-226-3、TO-92-3 标准主体 |
| 供应商设备封装： | TO-92-3 |
| 包装： | 散装 |
| 产品目录页面： | 663 (CN2011-ZH PDF) |
MCP111/112
4.2
Negative Going V DD Transients
4.3
Effect of Temperature on Time-out
The minimum pulse width (time) required to cause a
reset may be an important criteria in the implementa-
tion of a Power-on Reset (POR) circuit. This time is
referred to as transient duration, defined as the amount
of time needed for these supervisory devices to
respond to a drop in V DD . The transient duration time is
dependant on the magnitude of V TRIP – V DD . Generally
Period (t RPU )
The time-out period (t RPU ) determines how long the
device remains in the reset condition. This is affected
by both V DD and temperature. The graph shown in
Figures 2-22, 2-23 and 2-24 show the typical response
for different V DD values and temperatures.
speaking, the transient duration decreases with
increases in V TRIP – V DD .
4.4
Using in PICmicro ?
Microcontroller ICSP?
comparator overdrive for which the MCP111/112 will
not generate a reset pulse. It shows that the farther
below the trip point the transient pulse goes, the
duration of the pulse required to cause a reset gets
shorter. Figure 2-18 shows the transient response
characteristics for the MCP111/112.
A 0.1 μF bypass capacitor, mounted as close as
possible to the V DD pin, provides additional transient
immunity (refer to Figure 4-1).
Applications (MCP111 only)
the MCP111 for voltage supervisory function when the
PICmicro microcontroller will be programmed via the
In-Circuit Serial Programming? (ICSP)
feature. Additional information is available in TB087,
“Using Voltage Supervisors with PICmicro ? Microcon-
troller Systems which Implement In-Circuit Serial
Programming?” , DS91087.
Note:
It is recommended that the current into the
RST pin be current limited by a 1 k Ω
5V
V TRIP(MIN) - V DD
V TRIP(MAX)
V TRIP(MIN)
resistor.
V DD /V PP
t TRANS
0V
Time (μs)
FIGURE 4-3: Example of Typical
Transient Duration Waveform.
V DD
MCP111
RST
V SS
0.1 μF
1 k Ω
R PU
V DD
PICmicro ?
MCU
MCLR
(reset input)
(Active-Low)
V SS
FIGURE 4-4:
Typical Application Circuit
for PICmicro ? Microcontroller with the ICSP?
feature.
DS21889D-page 12
? 2005 Microchip Technology Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP111-450I/TO | 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 |
| MCP111-475E/MB | 制造商:Microchip Technology Inc 功能描述:VOLT SUPERVISOR DETECT 4.63V 4 - Rail/Tube |
| MCP111-475E/TO | 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 |
| MCP111-475I/TO | 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-195I | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Micropower Voltage Detector |
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