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  Microchip Technology Semiconductor Electronic Components Datasheet  


MCP1321

(MCP131x / MCP132x) Voltage Supervisor


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MCP131X/2X
Voltage Supervisor
Features
Package Types
• 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
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.
Device Features
SOT-23-5
MCP1316/16M/20
RST 1
VSS 2
5 VDD
RST
VSS
MR 3
4 WDI MR
MCP1317
15
2
34
VDD
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
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 Microchip Technology Inc.
DS21985A-page 1



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MCP131X/2X
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
Supply Voltage (VDD to VSS) . . . . . . . . . . . . . . . . . . . . . . 7.0V
Input current (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 mA
Output current (RST) . . . . . . . . . . . . . . . . . . . . . . . . . .10 mA
Voltage on all inputs and outputs, except Open-Drain RST
(with no internal pull-up resistor), w.r.t. VSS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.6V to (VDD + 1.0V)
Voltage on Open-Drain RST
(with no internal pull-up resistor) w.r.t. VSS . . -0.6V to 13.5V
Storage temperature . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient temp. with power applied . . . . . . . .-40°C to +125°C
Maximum Junction temp. with power applied . . . . . . . . 150°C
Power Dissipation (TA 70°C):
5-Pin SOT-23A .......................................................240 mW
ESD protection on all pins ..................................................≥ 4 kV
† Notice: Stresses above those listed under “Maximum Rat-
ings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits are specified for VDD = 1V to 5.5V, RPU = 100 kΩ
(only MCP1320, MCP1321 and MCP1322), TA = -40°C to +125°C.
Parameters
Sym Min Typ Max Units
Conditions
Operating Voltage Range
Specified VDD Value to VOUT Low
Operating Current:
VDD
VDD
IDD
1.0
1.0
— 5.5
V
——
V I RST = 10 μA, V RST < 0.3V
5 10 μA Watchdog Timer Active
1 2 μA Watchdog Timer Inactive
— 1 2 μA VDD < VTRIP
— 5 10 μA Reset Delay Timer Active
Note 1:
2:
3:
4:
5:
6:
Trip point is ±1.5% from typical value.
Trip point is ±2.5% from typical value.
Hysterysis is minimum = 1%, max = 6% at +25°C.
This specification allows this device to be used in PICmicro® microcontroller applications that require the
In-Circuit Serial Programming™ (ICSP™) feature (see device-specific programming specifications for
voltage requirements). The total time that the RST pin can be above the maximum device operational volt-
age (5.5V) is 100s. Current into the RST pin should be limited to 2 mA. It is recommended that the device
operational temperature be maintained between 0°C to +70°C (+25°C preferred). For additional informa-
tion, refer to Figure 2-35.
This parameter is established by characterization and is not 100% tested.
Custom ordered voltage trip point; minimum order volume requirement. Information available upon request.
DS21985A-page 2
© 2005 Microchip Technology Inc.



Part Number MCP1321
Description (MCP131x / MCP132x) Voltage Supervisor
Maker Microchip Technology - Microchip Technology
Total Page 30 Pages
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