Description

The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer.

A reset signal is output when the power is cut or falls abruptly. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs). An internal watchdog timer with two inputs for system operation diagnosis can provide a fall-safe function for various application systems.

Features

■ Precise detection of power voltage fall: ± 2.5

■ Detection voltage with hysteresis

■ Low power dispersion: ICC = 31 μA (reference)

■ Internal dual-input watchdog timer

■ Watchdog-timer halt function (by inhibition pin)

■ Independently-set watchdog and reset times

■ Three types of packages (SOP-8pin) : 2 types

Application

■ Arcade Amusement etc.