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MCP130-475I/SN 数据手册 - Telcom Semiconductor
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MCP130-475I/SN数据手册
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2001 Microchip Technology Inc. DS11184D-page 1
MCP120/130
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 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 kΩ pullup 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
BLOCK DIAGRAM
VSS
VDD
RST
VSS
VDD
VSS
VDD
RST
VSS
VDD
RST
VSS
RST
VDD
TO-92 with
‘D’ Bondout
TO-92 WITH
‘F’ BONDOUT
TO-92 with
‘G’ Bondout
TO-92 with
‘H’ Bondout
SOT-23-3
MCP120
MCP130
MCP130
MCP120
MCP130
MCP120
MCP120
MCP130
RST
VDD
NC
V
SS
1
2
3
4
8
7
6
5
NC
NC
NC
NC
150mil SOIC
MCP120
MCP130
RST
Delay
Circuit
Output
Driver
RESET
VDD
+
-
Comparator
pull-up on
MCP130
5k
Ω internal
Bandgap
Reference
only
Microcontroller Supervisory Circuit with Open Drain Output
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