Semiconductor memory device

Details Semiconductor memory device Semiconductor memory device

1990-03-07

1991-08-27

Popek, Joseph A.

Static information storage and retrieval

Powering

Data preservation

365149, 365185, G11C 1140

Patent

active

050439464

ABSTRACT:
A semiconductor memory device comprising a DRAM, an EEPROM, a mode switch for selecting either mode of the DRAM mode and the EEPROM mode, and a transfer circuit for transferring data stored in the DRAM to the EEPROM and vice versa. The DRAM consists of one transistor and one capacitor, and one of the terminals of the capacitor is electrically isolated.

REFERENCES:
patent: 4615020 (1986-09-01), Rinerson et al.
Terada et al., "A New Architecture for the NVRAM-An EEPROM Backed-Up Dynamic RAM", IEEE Journal of Solid-State Circuits, vol. 23, No. 1, Feb. 1988, pp. 86-90.

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