General Description 
The MAX16056–MAX16059 are ultra-low-current 125nA (typ) microprocessor (µP) supervisory circuits that monitor a single system supply voltage. These devices assert an active-low reset signal whenever the VCC supply voltage drops below the factory-trimmed reset threshold, manual reset is pulled low, or the watchdog timer runs out (MAX16056/MAX16058). The reset output remains asserted for an adjustable reset timeout period after VCC rises above the reset threshold. Factorytrimmed reset threshold voltages are offered from 1.575V to 4.625V in approximately 100mV increments (see Table 1)

FEATUREs
♦ Ultra-Low 125nA (typ) Supply Current
♦ 1.1V to 5.5V Operating Supply Range
♦ Factory-Set Reset Threshold Options from 1.575V
   to 4.625V in Approximately 100mV Increments
♦ Capacitor-Adjustable Reset Timeout
♦ Capacitor-Adjustable Watchdog Timeout
   (MAX16056/MAX16058)
♦ Watchdog Timer Capacitor Open Detect Function
♦ Optional Watchdog Disable Function
   (MAX16056/MAX16058)
♦ Manual Reset Input
♦ Guaranteed RESET Valid for VCC ≥ 1.1V
♦ Push-Pull or Open-Drain RESET Output Options
♦ Power-Supply Transient Immunity
♦ Small, 3mm x 3mm TDFN Package

APPLICATIONs
   Portable/Battery-Powered Equipment
   PDAs/Cell Phones
   MP3 Players/Pagers
   Glucose Monitors/Patient Monitors
   Metering/HVAC