GENERAL DESCRIPTION
The ADM682x are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power-on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button through a manual reset input. The parts feature different combinations of watchdog input and manual reset input and output stage configurations, as shown in Table 1.

FEATURES
   Precision low voltage monitoring
   9 reset threshold options: 1.58 V to 4.63 V
   140 ms (min) reset timeout
   Watchdog timer with 1.6 sec timeout
   Manual reset input
   Reset output stages
      Push-pull active-low
      Open-drain active-low
      Push-pull active-high
   Low power consumption (7 μA)
   Guaranteed reset output valid to VCC = 1 V
   Power supply glitch immunity
   Specified from −40°C to +125°C
   5-lead SOT-23 package

APPLICATIONS
   Microprocessor systems
   Computers
   Controllers
   Intelligent instruments
   Portable equipment