Power management system for serial EEPROM device

Details Power management system for serial EEPROM device Power management system for serial EEPROM device

1993-04-01

1994-12-06

LaRoche, Eugene R.

Static information storage and retrieval

Powering

365227, G11C 514

Patent

active

053717090

ABSTRACT:
Power consumption of a serial EEPROM is reduced while simultaneously precluding data corruption during write operations. These results are achieved by operating a brownout detector in the device to sense EEPROM supply voltage below a predetermined level and thereupon to place the EEPROM in a reduced power mode, but only during an interval that a write sequence is taking place. Such an interval includes loading of data in a temporary storage cache and writing the loaded data into the EEPROM. At the same time that the low voltage level is detected during a write sequence, any load or write operation then in progress is aborted. The brownout detector is intentionally left disabled or in a sleep mode during any read mode or standby mode since there is no jeopardy of corrupting the EEPROM memory during those times.

REFERENCES:
patent: 5001670 (1991-03-01), Slate
patent: 5070481 (1991-12-01), Haubner
patent: 5121007 (1992-06-01), Aizaki

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