By using this MCP103T-195I/LB microprocessor supervisory circuit from Microchip Technology you won"t have to worry if something happens to your main processor. It has a typical reset threshold voltage of 1.9 V, with a minimum of 1.872 V and a maximum of 1.929 V. This part has a minimum operating temperature of -40 °C and a maximum of 125 °C. This device has a minimum operating supply voltage of 1 V and a maximum of 5.5 V.