Part Number : MCP120
Function : Microcontroller Supervisory Circuit with Open Drain Output
Package : TO-92, SOT-23-3
Maker : Microchip Technology
Pinouts : 
Description :
The Microchip Technology Inc. MCP120 / MCP130 is a voltage supervisory device designed to keep a microcontroller in reset until the system voltage has reached the proper level and stabilized. It also operates as protection 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.
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
Datasheet PDF Download : 
Others datasheet of same file :
MCP120T–315I/TT, MCP120–270I/SN, MCP120–300DI/TO,
MCP130, MCP120T-450I/TT
