The AME8500 family allows the user to customize theCPU reset function without any external components.The user has a large choice of reset voltage thresholds,reset time intervals, and output driver configurations, allof which are preset at the factory. Each wafer is trimmedto the customer's specifications.These circuits monitor the power supply voltage of mPbased systems. When the power supply voltage dropsbelow the voltage threshold a reset is asserted immediately(within an interval TD1). The reset remains assertedafter the supply voltage rises above the voltage thresholdfor a time interval, TD2 . The reset output may be eitheractive high (RESET) or active low (RESETB). The resetoutput may be configured as either push/pull or open drain.The state of the reset output is guaranteed to be correctfor supply voltages greater than 1V.Space saving SOT23/TSOT-23 packages andmicropower quiescent current (<3.0mA) make this familya natural for portable battery powered equipment.