MCP1316 Microchip Technology, MCP1316 Datasheet - Page 31

• Manufacturer Part Number: MCP1316
• Description: Voltage Supervisor
• Manufacturer: Microchip Technology

5.0
This section shows application related information that
may be useful for your particular design requirements.
5.1
The MCP131X/2X devices are optimized for fast
response to negative-going changes in V
with an inordinate amount of electrical noise on V
(such as systems using relays) may require a 0.01 μF
or 0.1 μF bypass capacitor to reduce detection sensitiv-
ity. This capacitor should be installed as close to the
MCP131X/2X as possible to keep the capacitor lead
length short.
FIGURE 5-1:
with Bypass Capacitor.
5.2
Figure 5-2 and Figure 5-3 show the MCP131X/2X in
conventional voltage monitoring applications.
FIGURE 5-2:
FIGURE 5-3:
© 2005 Microchip Technology Inc.
Pwr
Sply
+
–
+
– –
APPLICATION INFORMATION
Supply Monitor Noise Sensitivity
Conventional Voltage Monitoring
MCP131X/2X
MCP131X/2X
WDI
MR
MCP131X/2X
V
V
V
V
V
DD
SS
V
DD
SS
DD
Typical Application Circuit
Battery Voltage Monitor.
Power Good Monitor.
SS
RST
RST
RST
RST
0.1 μF
Power Good
DD
BATLOW
. Systems
DD
5.3
Figure 5-4 shows the typical application circuit for using
the MCP132X for voltage superviory 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
Systems which Implement In-Circuit Serial Program-
ming™”, DS91087.
FIGURE 5-4:
for PICmicro
Feature.
Note:
Note:
MCP132X
V
V
SS
Using in PICmicro
Microcontroller, ICSP™
Applications
DD
RST
This operation can only be done using the
device with the Open-Drain RST pin
(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.
It is recommended that the current into the
RST pin be current limited by a 1 k
resistor.
®
Microcontroller with the ICSP™
0.1 μF
1 k
MCP131X/2X
Typical Application Circuit
R
V
PU
DD
®
/V
PP
Microcontroller
DS21985A-page 31
®
MCLR
Reset input)
(Active-Low)
PICmicro
Microcontroller
V
V
SS
DD
®