The SP791 is a microprocessor (P) supervisory circuit that integrates a myriad of components involved in discrete solutions to monitor power-supply and battery-control functions in P and digital systems. The SP791 offers complete P monitoring and watchdog functions. The SP791 is ideal for a low-cost battery management solution and is well suited for portable, battery-powered applications with its supply current of 40A. The 6ns chip-enable propagation delay, the 25mA current output in battery-backup mode, and the 250mA current output in standard operation also makes the SP791 suitable for larger scale, high-performance equipment.