POWER ON RESET CIRCUIT AND METHOD PERFORMING THE SAME

摘要

A power on reset circuit and a method processing the same are provided to generate upper and lower trip point signals based on a reference value obtained from the amplification of differential amplifier. A power on reset circuit(100) includes a latch initialization unit(110), a trip point signal generation unit(120), and a latch output unit(130). The latch initialization unit generates a first latch initialization signal based on an external voltage that is increased in power on. The trip point signal generation unit generates upper and lower trip point signals based on a reference voltage and the external voltage. The latch output unit generates a second latch initialization signal for initiating a digital IC(Integrated Circuit) based on the first latch initialization signal and the upper and lower trip point signals.