MCP131X/2X
Voltage Supervisor
Features
Package Types
SOT-23-5
• Low supply current: 1 μA (typ.), 10 μA (max.)
• Precision monitoring trip point options:
- 2.9V and 4.6V (Standard Offerings)
MCP1316/16M/20
MCP1317
VDD
WDI
RST
VSS
RST
1
5
1
2
3
VDD
WDI
5
- 2.0V to 4.7V in 100 mV increments,
(Contact the local Microchip Sales Office)
VSS
MR
2
3
4
MR
4
• Resets microcontroller in a power-loss event
• Reset Delay Time Out Option:
MCP1318/18M/21
MCP1319/19M/22
- 1.4 ms, 30 ms, 200 ms, or 1.6s (typ.)
• Watchdog Timer Input Time Out Options:
- 6.3 ms, 102 ms, 1.6s or 25.6s (typ.)
• Manual Reset (MR) input (active-low)
• Single and complementary Reset output(s)
• Reset Output Options:
VDD
VDD
RST
VSS
1
2
3
5
RST
VSS
1
2
3
5
RST
4
4
RST
MR
WDI
- Push-Pull (active-high or active-low)
- Open-Drain (internal or external Pull-up)
• Temperature Range: -40°C to +125°C
• Voltage Range: 1.0V to 5.5V
Block Diagram
VDD
Comparator
+
–
• Lead Free Packaging
RST
RST
Output
Driver
Description
Reference
Voltage
The MCP1316/16M/17/18/18M/19/19M/20/21/22 are
voltage supervisor devices designed to keep a micro-
controller in Reset until the system voltage has reached
and stabilized at the proper level for reliable system
operation. This sevice family also offers a Watchdog
Timer to monitor system operation and a Manual Reset
input. The table below shows the available features for
these devices.
MR
Noise Filter
Watchdog
VSS
WDI
Note: Features available depend on the device
Device Features
Reset Output A
Device
Reset Output B
WDI Input
MR Input
Pull-up
Active
Pull-up
Active
Type
Type
Resistor Level
Resistor Level
MCP1316
MCP1316M
MCP1317
MCP1318
MCP1318M
MCP1319
MCP1319M
MCP1320
MCP1321
MCP1322
Push-Pull
—
Low
Low
High
Low
Low
Low
Low
Low
Low
Low
—
—
—
—
—
—
—
—
—
—
—
—
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Open-Drain
Push-Pull
Internal
—
—
—
—
—
Push-Pull
—
Push-Pull
Push-Pull
Push-Pull
Push-Pull
—
High
High
High
High
—
Open-Drain
Push-Pull
Internal
—
No
Yes
Yes
Yes
No
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Internal
External
External
External
No
Yes
Yes
No
Push-Pull
Push-Pull
High
High
Yes
© 2005 Microchip Technology Inc.
DS21985A-page 1