参数资料
型号: MCP1322T-29LE/OT
厂商: Microchip Technology
文件页数: 35/52页
文件大小: 0K
描述: IC SUPERVISOR 2.9V OD/PP SOT23-5
标准包装: 1
类型: 简单复位/加电复位
监视电压数目: 1
输出: 开路漏极,推挽式
复位: 高有效/低有效
复位超时: 最小为 140 ms
电压 - 阀值: 2.9V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SC-74A,SOT-753
供应商设备封装: SOT-23-5
包装: 标准包装
其它名称: MCP1322T-29LE/OTDKR
MCP131X/2X
5.0
APPLICATION INFORMATION
5.3
Using in PIC ? Microcontroller,
This section shows application related information that
may be useful for your particular design requirements.
Note:
ICSP? Applications
This operation can only be done using the
5.1
Supply Monitor Noise Sensitivity
device with the Open-Drain RST pin
The MCP131X/2X devices are optimized for fast
response to negative-going changes in V DD . Systems
with an inordinate amount of electrical noise on V DD
(such as systems using relays) may require a 0.01 μF
or 0.1 μF bypass capacitor to reduce detection
sensitivity. This capacitor should be installed as close
to the MCP131X/2X as possible to keep the capacitor
lead length short.
0.1 μF
(MCP1320, MCP1321, and MCP1322).
Devices that have the internal pull-up
resistor are not recommended due to the
current path of the internal pull-up resistor.
Figure 5-4 shows the typical application circuit for using
the MCP132X for a voltage supervisory function when
the PIC ? microcontroller will be programmed via the In-
Circuit Serial Programming? (ICSP?) feature. Addi-
tional information is available in TB087, “Using Voltage
Supervisors with PIC ? Microcontroller Systems which
Implement In-Circuit Serial Programming? ”
(DS91087).
V DD
MCP131X/2X
Note:
It is recommended that the current into the
RST pin be current limited by a 1 k Ω
WDI
MR
RST
RST
resistor.
V SS
V DD /V PP
FIGURE 5-1: Typical Application Circuit
with Bypass Capacitor.
V DD
0.1 μF
R PU
V DD
PIC ?
MCP132X
Microcontroller
5.2 Conventional Voltage Monitoring
Figure 5-2 and Figure 5-3 show the MCP131X/2X in
conventional voltage monitoring applications.
RST
V SS
1 k Ω
MCLR
Reset input)
(Active-Low)
V SS
+
V DD
FIGURE 5-4:
Typical Application Circuit
MCP131X/2X
RST
BATLOW
for PIC ? Microcontroller with the ICSP? Feature.
V SS
FIGURE 5-2:
Battery Voltage Monitor.
V DD
+
Pwr
Sply
MCP131X/2X
RST
Power Good
V SS
FIGURE 5-3:
Power Good Monitor.
? 2005-2012 Microchip Technology Inc.
DS21985C-page 35
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