METHOD AND APPARATUS OF CONTROLLING PROCESSING DEVICES DURING POWER TRANSITION

摘要

A power sensing circuit (108) is used to determined when the current supply to a microcontroller (107) is under transition. The power sensing circuit (108) has: a low voltage detector (200); a voltage regulator (201); A Schottky diode (202); resistors (203, 204, 205); a regulated voltage supply (206); a battery voltage supply (207); a backup power capacitor (208); a non-maskable interrupt (209); a reset override pin (210); and a reset input (211).