Fujitsu MB3793-45
The MB3793 is an integrated circuit to monitor power voltage; it incorporates a watchdog timer. When the power recovers normally after resetting, a power-on reset signal is output to microprocessor units (MPUs).APPLICATIONS
BIPOLAR Power Voltage Monitoring IC with Watchdog Timer MB3793-45 sDESCRIPTION
A reset signal is output when the power is cut or falls abruptly. An internal watchdog timer with two inputs for system operation diagnosis can provide a fall-safe function for various application systems. There is also a mask option that can detect voltages of 4.9 to 2.4 V in 0.1-V steps. The model number is MB3793-45 corresponding to the detected voltage. The model number and package code are as shown below. DataSheet4U.com Model No. Package code Detection voltage MB3793-45 3793-7 4.5 V DataShee sFEATURES
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● 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 wacthdog and reset times s PACKAGE 8-pin plastic SOP 8-pin plastic SOL (FPT-8P-M01) (FPT-8P-M02) DataSheet4U.com DataSheet 4 U .com MB3793-45 s PIN ASSIGNMENT (Top view) 1 2 3 4 8 7 6 5 CK1 CK2 INH VCC RESET CTW CTP GND (FPT-8P-M01) (FPT-8P-M02) s PIN
DESCRIPTION
Pin no.