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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP120 Datasheet

(MCP120 / MCP130) Microcontroller Supervisory Circuit with Open Drain Output

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MCP120 pdf
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 k) for MCP130
• Holds RESET for 350 ms (typical)
• RESET to VCC = 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
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 kpullup resistor. Both devices have active
low RESET pins. The MCP120/130 will assert the
RESET signal whenever the voltage on the VDD pin is
below the trip-point voltage.
PACKAGES
TO-92 with
‘D’ Bondout
TO-92 WITH
‘F’ BONDOUT
RST VSS
VDD
MCP120
MCP130
VSS
VDD
RST
MCP130
TO-92 with
‘G’ Bondout
TO-92 with
‘H’ Bondout
VDD
RST
VSS
MCP120
VDD
VSS
RST
MCP120
MCP130
SOT-23-3
150mil SOIC
RST
VDD
RST 1
VSS
VDD 2
NC 3
VSS 4
8 NC
7 NC
6 NC
5 NC
MCP120
MCP130
MCP120
MCP130
BLOCK DIAGRAM
VDD
Comparator
+
-
Delay
Circuit
Output
Driver
5kinternal
pull-up on
MCP130
only
RESET
Bandgap
Reference
2001 Microchip Technology Inc.
DS11184D-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP120 Datasheet

(MCP120 / MCP130) Microcontroller Supervisory Circuit with Open Drain Output

No Preview Available !

MCP120 pdf
MCP120/130
1.0 ELECTRICAL CHARACTERISTICS
1.1 Maximum Ratings*
VDD........................................................................ 7.0V
All inputs and outputs w.r.t. VSS .....-0.6V to VDD +1.0V
Storage temperature .......................... -65°C to +150°C
Ambient temp. with power applied ..... -65°C to +125°C
ESD protection on all pins ..................................... ≥ 2 kV
DC AND AC CHARACTERISTICS
*Notice: Stresses above those listed under Maximum
Ratingsmay 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. Exposure to maximum rating conditions
for extended periods may affect device reliability.
All parameters apply at the
VDD = 1.0 - 5.5V
specified temp and voltage
Industrial (I): -40°C to +85°C
ranges unless otherwise noted.
Parameter
Symbol Min.
Typ.
Operating Voltage Range
VDD Value to RESET
Operating Current
VDD Trip Point
MCP1X0-270
MCP1X0-300
MCP1X0-315
MCP1X0-450
MCP1X0-460
MCP1X0-475
MCP1X0-485
RESET Low
Level Output
Voltage
MCP1X0-270
MCP1X0-300
MCP1X0-315
MCP1X0-450
MCP1X0-460
MCP1X0-475
MCP1X0-485
RESET High
Level Output
Voltage
(MCP130 Only)
MCP130-xxx
(All VTRIP
Points)
Pull-up Resistor (MCP130 Only)
Output Leakage (MCP120 Only)
Threshold Hysteresis
VDD Detect to RESET Inactive
VDD Detect to RESET
VDD
VDDMIN
IDD
VTRIP
VOL
VOH
VHYS
tRPU
tRPD
1.0
1.0
45
2.55 2.625
2.85 2.925
3.0 3.075
4.25 4.375
4.35 4.475
4.50 4.625
4.60 4.725
——
——
VDD-0.7
5
1
50
150 350
10
Note: Typical values are for 25°C and VDD = 5.0V
Max.
5.5
60
2.7
3.0
3.15
4.50
4.60
4.75
4.85
0.4
0.6
700
Units
Test Conditions
V
V
µA VDD = 5.5V (no load)
V
V IOL = 3.2 mA,
VDD = VTRIPMIN
IOL = 8.5 mA,
VDD = VTRIPMIN
V IOH = 50 µA,VDD > VTRIPMAX
k
µA
mV
ms
µs VDD ramped from VTRIPMAX +
250 mV down to VTRIPMIN -
250 mV
2001 Microchip Technology Inc.
DS11184D-page 2


Part Number MCP120
Description (MCP120 / MCP130) Microcontroller Supervisory Circuit with Open Drain Output
Maker Microchip Technology
Total Page 16 Pages
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