MB3793-45 Datasheet, PDF (1/28 Pages) Fujitsu Component Limited. – POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER

FUJITSU MICROELECTRONICS
DATA SHEET
DS04-27405-2E
ASSP
BIPOLAR
POWER-VOLTAGE MONITORING IC
WITH WATCHDOG TIMER
MB3793-45
■ 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.
Model No.
MB3793-45
Marking Code
3793-7
Detection voltage
4.5 V
■ 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
■ APPLICATION
• Arcade Amusement
etc.
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2009.9