Multilevel sense device for a flash memory

Details Multilevel sense device for a flash memory Multilevel sense device for a flash memory

1998-10-29

1999-08-10

Le, Vu A.

Static information storage and retrieval

Read/write circuit

Differential sensing

36518503, 36518521, G11C 1604

Patent

active

059369060

ABSTRACT:
A multilevel sense device for a flash memory according to the invention is disclosed. When reading multilevel digital data stored in a selected cell of a primary cells array, the primary cells array generates and transmits a sense current to a sense amplifier. Then, the sense current is compared with permanent currents pre-established by a reference cells array thereby to determine/fetch the digital data. Furthermore, in the multilevel sense device, multilevel digital data stored in a selected cell are totally read out in one time. This causes more reading time saved.

REFERENCES:
patent: 5768188 (1998-06-01), Park et al.
patent: 5768191 (1998-06-01), Choi et al.
patent: 5862074 (1999-01-01), Park

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