Ferroelectric-type nonvolatile semiconductor memory

Details Ferroelectric-type nonvolatile semiconductor memory Ferroelectric-type nonvolatile semiconductor memory

2005-05-03

2005-05-03

Nguyen, Viet Q. (Department: 2818)

Static information storage and retrieval

Systems using particular element

Ferroelectric

C365S065000, C365S117000, C365S210130, C365S063000

Reexamination Certificate

active

06888735

ABSTRACT:
A ferroelectric-type nonvolatile semiconductor memory comprising a plurality of bit lines and a plurality of memory cells, a plurality of the memory cells belonging to one of two or more thermal history groups having different thermal histories with regard to their production processes, and a reference potential of the same level is provided to the bit lines connected to the memory cells belonging to the same thermal history group, and reference potentials of different levels are provided to the bit lines connected to the memory cells belonging to the different thermal history groups.

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