MCP121-240I データシートの表示（PDF） - Microchip Technology
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MCP121-240I Datasheet PDF : 28 Pages
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MCP102/103/121/131
Micropower Voltage Supervisors
Features
Package Types
• 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, typ.)
• Available in SOT23-3, TO-92 and SC-70
packages
• Temperature Range:
- Extended: -40°C to +125°C
(except MCP1XX-195)
- Industrial: -40°C to +85°C (MCP1XX-195 only)
• Pb-free devices
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. Table 1
shows the available features for these devices.
TABLE 1: DEVICE FEATURES
SOT23-3/SC-70
TO-92
RST 1
VDD 2
3 VSS
RST
VDD VSS
SOT23-3/SC-70
VSS 1
3 VDD
RST 2
Block Diagram
VDD
Comparator
+
Reset
–
Delay
Circuit
Output
Driver
R (1)
RST
Band Gap
Reference
VSS Note 1: MCP131 Only
Device
Output
Reset Package Pinout
Type Pull-up Resistor Delay (typ) (Pin # 1, 2, 3)
Comment
MCP102 Push-pull No
120 ms
MCP103 Push-pull No
120 ms
MCP121 Open-drain External
120 ms
MCP131 Open-drain Internal (~95 kΩ) 120 ms
MCP111 Open-drain External
No
MCP112 Push-Pull No
No
RST, VDD, VSS
VSS, RST, VDD
RST, VDD, VSS
RST, VDD, VSS
VOUT, VSS, VDD
VOUT, VSS, VDD
See MCP111/112 Data Sheet
(DS21889)
See MCP111/112 Data Sheet
(DS21889)
© 2005 Microchip Technology Inc.
DS21906B-page 1
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