The MCP120T-315I/TT 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. MCP120 features an open drain output and active low reset and is available in a choice of seven different trip voltages. It operates over the extended industrial temperature range (-40°C/+85°C). The MCP130 has an internal 5kR pull-up resistor. Both devices have active low RESET pins. The MCP120 will assert the RESET signal whenever the voltage on the VDD pin is below the trip-point voltage.
Holds microcontroller in reset until supply voltage reaches stable operating level
Resets microcontroller during power loss
Precision monitoring of 3, 3.3 and 5V systems
Active low RESET pin
Holds RESET for 350ms (typical)
RESET to VCC = 1.0V
Accuracy of +(-) 125mV for 5V systems and +(-)75mV for 3V systems over temp
