ASM802M Datasheet PDF

onsemi ASM802M

The ASM690A / ASM692A / ASM802L / ASM802M / ASM805L offers complete single chip solutions for power supply monitoring and control battery functions in microprocessor systems. Each device implements four functions: Reset control, watchdog monitoring, battery−backup switching and power failure monitoring. The important features of these four functions are: • 1.6 second watchdog timer to keep microprocessor responsive • 4.40 V or 4.65 V VCC threshold for microprocessor reset at power−up and power−down • SPDT (Single−pole, Double−throw) PMOS switch connects backup power to RAM if VCC fails • 1.25 V threshold detector for power loss or general purpose voltage monitoring These features are pin−compatible with the industry standard power−supply supervisors.