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. Factory-trimmed reset threshold voltages are offered from 1.575V to 4.625V in approximately 100mV increments (see Table 1).

Benefits and Features
● Reduced Power Requirements
   • Ultra-Low 125nA (typ) Supply Current
   • 1.1V to 5.5V Operating Supply Range
● Configurable Circuit Enables Flexible Designs
   • 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
   • Push-Pull or Open-Drain RESET Output Options
● Integrated Features Increases System Robustness
   • Power-Supply Transient Immunity
   • Guaranteed RESET Valid for VCC ≥ 1.1V
● Saves Board Space
   • 3mm x 3mm TDFN Package

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