IMP805 Datasheet (IMP Inc) - P POWER SUPPLY SUPERVISOR

IMP805, P POWER SUPPLY SUPERVISOR

Pin Number IMP690A/IMP692A IMP802L/IMP802M 1 IMP805L 1 Name VOUT Function Voltage supply for RAM.

When VCC is above the reset threshold, VOUT connects to VCC through a P-channel MOS device.

If VCC falls below the reset threshold, this output will be connected to the backup supply at VBATT (or VCC

IMP690A , 692A , 802L/M, 805L POWER MANAGEMENT µP Power Supply Supervisor with Battery Backup Switch The IMP690A/IMP692A/IMP802L/IMP802M/IMP805L simplify power supply monitoring and control in microprocessor systems.

Each circuit implements four functions: Reset control, watchdog monitoring, batterybackup switching and power-failure monitoring.

In addition to microprocessor reset under powerup and power-down conditions, these devices provide battery-backup switching to maintain control in power

IMP805 Features

* of these four functions are: a) 1.6 second watchdog timer to keep microprocessor responsive b) c) 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 Key Features x Design improvement