The Microchip Technology Inc. MCP120/130 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. It features precision monitoring of 3V, 3.3V, and 5V systems, an open drain output, and an internal pull-up resistor (MCP130). This device is ideal for applications requiring reliable microcontroller operation and protection against power fluctuations.