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 fail-safe function for various application systems.

Features

■ Precise detection of power voltage fall: ±2.5

■ Detection voltage with hysteresis

■ Low power dispersion: ICC = 27 μA (reference)

■ Internal dual-input watchdog timer

■ Watchdog timer halt function (by inhibition terminal)

■ Independently-set watchdog and reset times

■ Mask option for detection voltage (4.9 to 2.4 V, 0.1-V steps)

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

Application

■ Arcade Amusement etc.