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MCP120T-460FI

Description
Microcontroller Supervisory Circuit with Open Drain Output
File Size157KB,16 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Download Datasheet View All

MCP120T-460FI Overview

Microcontroller Supervisory Circuit with Open Drain Output

MCP120/130
Microcontroller Supervisory Circuit with Open Drain Output
FEATURES
• Holds microcontroller in reset until supply voltage
reaches stable operating level
• Resets microcontroller during power loss
• Precision monitoring of 3V, 3.3V and 5V systems
• 7 voltage trip points available
• Active low RESET pin
• Open drain output
• Internal pull-up resistor (5 kΩ) for MCP130
• Holds RESET for 350 ms (typical)
• RESET to V
CC
= 1.0V
• Accuracy of ±125 mV for 5V systems and ±75 mV
for 3V systems over temperature
• 45
µA
typical operating current
• Temperature range:
- Industrial (I): -40°C to +85°C
PACKAGES
TO-92 with
‘D’ Bondout
TO-92 WITH
‘F’ BONDOUT
RST
V
SS
V
DD
V
SS
V
DD
RST
MCP120
MCP130
MCP130
TO-92 with
‘G’ Bondout
TO-92 with
‘H’ Bondout
DESCRIPTION
The Microchip Technology Inc. MCP120/130 is a volt-
age supervisory device designed to keep a microcon-
troller in reset until the system voltage has reached the
proper level and stabilized. It also operates as protec-
tion from brown-out conditions when the supply voltage
drops below a safe operating level. Both devices are
available with a choice of seven different trip voltages
and both have open drain outputs. The MCP130 has an
internal 5 kΩ pullup resistor. Both devices have active
low RESET pins. The MCP120/130 will assert the
RESET signal whenever the voltage on the V
DD
pin is
below the trip-point voltage.
V
DD
V
SS
RST
V
DD
V
SS
MCP120
RST
MCP120
MCP130
150mil SOIC
RST
V
DD
NC
V
SS
1
2
3
4
8
7
6
5
NC
NC
NC
NC
SOT-23-3
RST
V
DD
V
SS
MCP120
MCP130
MCP120
MCP130
BLOCK DIAGRAM
V
DD
5k
internal
pull-up on
MCP130
only
RESET
Comparator
+
-
Delay
Circuit
Output
Driver
Bandgap
Reference
2001 Microchip Technology Inc.
DS11184D-page 1
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rain MCU

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