View aat601-series datasheet:

Advanced Analog Technology, Inc. May 2008 AAT601 Product information presenting is current as of publication date. Details are subject to change without notice HIGH-PRECISION RESET VOLTAGE DETECTOR FEATURES GENERAL DESCRIPTION The AAT601 is a reset voltage detector that provides a Low Current Consumption high-precision output signal via which the user may be (3µA Typical, VDD = 3V) able to initiate or reset the system. High-Precision Reset Voltage ±2% The detection voltage with an accuracy of ±2% is Hysteresis Voltage Typical 5% trimmed to the customer’s specification. Delay time is Reset Voltage 1.8V to 5.5V fixed by internal counter. The output signal may be Fixed or Adjustable Delay Time configured as either open drain or push-pull. Open