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MCP121 bảng dữ liệu(PDF) 1 Page - Microchip Technology

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 2004 Microchip Technology Inc.
DS-21906A-page 1
MCP102/103/121/131
Features
• Ultra low supply current: 1.75 µA (steady state max.)
Precision monitoring options of:
- 1.90V, 2.32V, 2.63V, 2.93V, 3.08V, 4.38V
and 4.63V
• Resets microcontroller in a power-loss event
•RST pin (Active-low):
- MCP121: Active-low, open-drain
- MCP131: Active-low, open-drain with internal
pull-up resistor
- MCP102 and MCP103: Active-low, push-pull
• Reset Delay Timer (120 ms delay typical)
• Available in SOT23-3, TO-92 and SC70 packages
Temperature Range:
- Extended: -40°C to +125°C
(except MCP1XX-195)
- Industrial: -40°C to +85°C (MCP1XX-195 only)
• Lead Free Packaging
Applications
• Critical Microcontroller and Microprocessor Power
Monitoring Applications
• Computers
• Intelligent Instruments
• Portable Battery-Powered Equipment
General Description
The MCP102/103/121/131 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.
Package Types
Block Diagram
TABLE 1:
DEVICE FEATURES
SOT23-3/SC-70
VSS
RST
1
2
3
VDD
RST
TO-92
SOT23-3/SC-70
VDD
VSS 1
2
3
RST
VDD VSS
VDD
Comparator
+
Output
Driver
RST
Band Gap
Reference
VSS
Reset
Delay
Circuit
R (1)
Note 1: MCP131 Only
Device
Output
Reset
Delay (typ)
Package Pin Out
(Pin # 1, 2, 3)
Comment
Type
Pull-up Resistor
MCP102 Push-Pull
No
120 ms
RST, VDD, VSS
MCP103 Push-Pull
No
120 ms
VSS, RST, VDD
MCP121 Open-Drain External
120 ms
RST, VDD, VSS
MCP131 Open-Drain Internal (~95 k
Ω)120 ms
RST, VDD, VSS
MCP111 Open-Drain External
No
VOUT, VSS, VDD
See MCP111/112 Data Sheet
(DS21889)
MCP112 Push-Pull
No
No
VOUT, VSS, VDD
See MCP111/112 Data Sheet
(DS21889)
Micropower Voltage Supervisors


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