MCP120-450I/SN is a voltage supervisory device designed to keep a microcontroller in reset until the system voltage has reached the proper level and stabilized. 
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1. FEATURES
2. • Holds microcontroller in reset until supply voltage
3. reaches stable operating level
4. • Resets microcontroller during power loss
5. • Precision monitoring of 3V, 3.3V and 5V systems
6. • 7 voltage trip points available
7. • Active low RESET pin
8. • Open drain output
9. • Internal pull-up resistor (5 kΩ) for MCP130
10. • Holds RESET for 350 ms (typical)
11. • RESET to VCC = 1.0V
12. • Accuracy of ±125 mV for 5V systems and ±75 mV
13. for 3V systems over temperature
14. • 45 μA typical operating current
15. • Temperature range:
16. - Industrial (I): -40°C to +85°C