The APX803L is brand new micro-power voltage detector series developed by Diodes Inc. with target to be used for microprocessor (µP) supervisory circuits to monitor the power supplies in µP and digital systems. It provides wide range of detection voltage level ranging from 1.2V to 5.0V with 0.1V per step options fixed internally from circuit design. As to supply current, APX803L series requires low supply current level of 1µA (typical) which gives no burden to power efficiency on systems requiring detection functions, such as smart phone, battery-powered devices, Internet equipments and so on.