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  Microchip Technology Semiconductor Electronic Components Datasheet  


MCP101

Microcontroller Supervisory Circuit with Push-Pull Output


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MCP101 pdf
MCP100/101
Microcontroller Supervisory Circuit with Push-Pull 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 (MCP100) or active high
RESET (MCP101)
• Push-pull output
• Holds RESET/RESET for 350 ms (typical)
• Guaranteed RESET/RESET to VDD = 1.0V
• Accuracy of ±125mV for 5V systems and ±75mV
for 3V systems over temperature
• 45 µA typical operating current
• Temperature range:
- Industrial (I): -40°C to +85°C
DESCRIPTION
The Microchip Technology Inc. MCP100/101 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 push-pull outputs. The MCP100 has a
low active RESET pin and the MCP101 has a high
active RESET pin. The MCP100/101 will assert the
RESET/RESET signal whenever the voltage on the
VDD pin is below the trip-point voltage.
PACKAGES
TO-92 with
‘D’ Bondout
RST
OR
RSTVDD
VSS
MCP100
MCP101
TO-92 with
‘H’ Bondout
VDD
VSS
RST
OR
RST
MCP100
MCP101
SOT-23-3
RST
OR
RST
VDD
VSS
MCP100
MCP101
BLOCK DIAGRAM
VDD
Comparator
+
-
Delay
Circuit
Bandgap
Reference
Output
Driver
RESET
or
RESET
© 1999 Microchip Technology Inc.
Preliminary
DS11187D-page 1



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MCP101 pdf
MCP100/101
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
Soldering temperature of leads (10 seconds) ............. +300°C
ESD protection on all pins .................................................. ≥ 2 kV
*Notice: Stresses above those listed under “Maximum
Ratings” 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. Exposure to maximum rating conditions
for extended periods may affect device reliability.
DC AND AC CHARACTERISTICS
All parameters apply at the specified
temp and voltage ranges unless oth-
erwise noted.
VDD = 1.0 - 5.5V
Industrial (I):-40°C to +85°C
PARAMETER
SYMBOL MIN TYP MAX UNITS
TEST CONDITIONS
Operating Voltage Range
VDD Value to Guarantee RESET/
RESET
Operating current
VDD Trip Point
MCP10X-270
MCP10X-300
MCP10X-315
MCP10X-450
MCP10X-460
MCP10X-475
MCP10X-485
RESET Low Level
Output Voltage
(MCP100)
MCP100-270
MCP100-300
MCP100-315
MCP100-450
MCP100-460
MCP100-475
MCP100-485
RESET High Level MCP100-XXX
Output Voltage
(MCP100)
(All VTRIP Points)
RESET Low Level
Output Voltage
(MCP101)
MCP101-270
MCP101-300
MCP101-315
MCP101-450
MCP101-460
MCP101-475
MCP101-485
RESET High level MCP101-XXX
Output Voltage
(MCP101)
(All VTRIP Points)
Threshold Hysteresis
VDD Detect to RESET/RESET Inactive
VDD Detect to RESET/RESET
VDD
VDDMIN
IDD
VTRIP
VOL
VOH
VOL
VOH
VHYS
tRPU
tRPD
1.0 5.5
1.0
2.55
2.85
3.0
4.25
4.35
4.50
4.60
45 60
2.625
2.925
3.075
4.375
4.475
4.625
4.725
2.7
3.0
3.15
4.50
4.60
4.75
4.85
0.4
0.6
VDD-0.7
0.4
0.6
VDD-0.7
50
150 350 700
10
V
V
µA VDD = 5.5V (no load)
V
V IOL = 3.2mA, VDD = VTRIPMIN
IOL = 8.5mA, VDD = VTRIPMIN
V IOH = 3mA,VDD > VTRIPMAX
V IOL = 3.2mA, VDD > VTRIPMAX
IOL = 8.5mA, VDD > VTRIPMAX
V IOH = 3mA,VDD = VTRIPMIN
mV
ms
µs VDD ramped from VTRIPMAX +
250mV down to VTRIPMIN -
250mV
DS11187D-page 2
Preliminary
© 1999 Microchip Technology Inc.



Part Number MCP101
Description Microcontroller Supervisory Circuit with Push-Pull Output
Maker Microchip Technology - Microchip Technology
Total Page 8 Pages
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