MCP131X/2X
Voltage Supervisor
Features:
Package Types
• Low Supply Current: 1 µA (Typical),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 (Typical)
• Watchdog Timer Input Time-Out Options:
- 6.3 ms, 102 ms, 1.6s, or 25.6s (Typical)
• 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 +85°C for Trip Points 2.0 to 2.4V and,
- -40°C to + 125°C for Trip Points > 2.5V
• Voltage Range: 1.0V to 5.5V
• Lead Free Packaging
Description:
The MCP131X/2X are voltage supervisor devices
designed to keep a microcontroller in Reset until the
system voltage has reached and stabilized at the
proper level for reliable system operation. The table
below shows the available features for these devices.
SOT-23-5
MCP1316/16M/20
MCP1317
RST 1
VSS 2
MR 3
5 VDD
4 WDI
RST 1
VSS 2
MR 3
5 VDD
4 WDI
MCP1318/18M/21
RST 1
5 VDD
VSS 2
RST 3
4 WDI
MCP1319/19M/22
RST 1
5 VDD
VSS 2
RST 3
4 MR
Block Diagram
VDD
Comparator
+
–
Reference
Voltage
Output
Driver
RST
RST
MR
WDI
Noise Filter
Watchdog
VSS
Note: Features available depend on the device.
Device Features
Reset Output A
Reset Output B
Device
Type
Pull-up Active
Resistor Level
Type
Pull-up Active WDI Input
Resistor Level
MR Input
MCP1316
Push-Pull
— Low
—
— — Yes
Yes
MCP1316M Open-Drain Internal Low
—
— — Yes
Yes
MCP1317
MCP1318
Push-Pull
Push-Pull
— High
—
— — Yes
— Low Push-Pull — High Yes
Yes
No
MCP1318M Open-Drain Internal Low Push-Pull — High Yes
No
MCP1319
Push-Pull
— Low Push-Pull — High
MCP1319M Open-Drain Internal Low Push-Pull — High
No
No
Yes
Yes
MCP1320
Open-Drain External Low
—
— — Yes
Yes
MCP1321 Open-Drain External Low Push-Pull — High Yes
MCP1322 Open-Drain External Low Push-Pull — High
No
No
Yes
2005-2012 Microchip Technology Inc.
DS21985D-page 1
