MCP120 Overview
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.
MCP120 Key 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