CIRCUIT AND METHOD FOR DATA RETENTION AT LOW VOLTAGE

摘要

PURPOSE: A low voltage data retention method and a circuit thereof are provided to compare voltage of a supplied power source and reference voltage when a chip is turned off, thereby determining a turn on/off state of power-loss modules. CONSTITUTION: A reference voltage generating circuit generates reference voltage. A voltage detection circuit detects voltage of a supplied power source. A comparator circuit compares the voltage detected by the voltage detection circuit and the reference voltage. The comparator circuit generates a turn-off signal which deactivates power consumption modules of an integrated chip when the detected voltage is lower than the reference voltage.