ASM802M - Alliance Semiconductor

ASM802M (ASMxxxx) UP Power Supply Supervisor

The AS690A / AS692A / AS802L / AS802M / AS805L 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. In addition to microprocessor reset under power-up and power.

Features

of these four functions are:
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• Typical Operating Circuit Unregulated DC Regulated +5V VCC RESET PFI R2 VBATT PFO WDI VOUT RESET NMI VCC www.DataSheet4U.com R1 0.1 µF 1.6 second watchdog timer to keep microprocessor responsive 4.40V or 4.65V 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 1.25V threshold detector for power loss or general purpose voltage monitoring I/O LINE GND + _ ASM690A VCC CMOS RAM GND These features are pin-compatible with the industry standard power-s.