MCP131X/2X
Voltage Supervisor
Features
• Low supply current: 1
μA
(typ.), 10
μA
(max.)
• Precision monitoring trip point options:
- 2.9V and 4.6V (Standard Offerings)
- 2.0V to 4.7V in 100 mV increments,
(Contact the local Microchip Sales Office)
• Resets microcontroller in a power-loss event
• Reset Delay Time Out Option:
- 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:
- 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
• Lead Free Packaging
Package Types
SOT-23-5
MCP1316/16M/20
MCP1317
RST
V
SS
MR
1
2
3
5
V
DD
WDI
RST
V
SS
1
2
3
5
V
DD
WDI
4
MR
4
MCP1318/18M/21
MCP1319/19M/22
RST
V
SS
RST
1
2
3
5
V
DD
RST
V
SS
1
2
3
5
V
DD
4
WDI
RST
4
MR
Block Diagram
V
DD
+
–
Comparator
RST
Reference
Voltage
Noise Filter
Watchdog
V
SS
Output
Driver
RST
Description
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
WDI
Note:
Features available depend on the device
Device Features
Reset Output A
Device
MCP1316
MCP1316M
MCP1317
MCP1318
MCP1318M
MCP1319
MCP1319M
MCP1320
MCP1321
MCP1322
Type
Push-Pull
Open-Drain
Push-Pull
Push-Pull
Open-Drain
Push-Pull
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Pull-up
Resistor
—
Internal
—
—
Internal
—
Internal
External
External
External
Active
Level
Low
Low
High
Low
Low
Low
Low
Low
Low
Low
Reset Output B
Type
—
—
—
Push-Pull
Push-Pull
Push-Pull
Push-Pull
—
Push-Pull
Push-Pull
Pull-up
Resistor
—
—
—
—
—
—
—
—
—
—
Active
Level
—
—
—
High
High
High
High
—
High
High
WDI Input
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
MR Input
Yes
Yes
Yes
No
No
Yes
Yes
Yes
No
Yes
©
2005 Microchip Technology Inc.
DS21985A-page 1
MICROCHIP [ MICROCHIP TECHNOLOGY ]
