Nonvolatile semiconductor memory device and IC memory card using

Details Nonvolatile semiconductor memory device and IC memory card using Nonvolatile semiconductor memory device and IC memory card using

1998-12-02

2000-04-04

Nelms, David

Static information storage and retrieval

Floating gate

Multiple values

365 52, 36518223, G11C 1134

Patent

active

060469331

ABSTRACT:
A nonvolatile semiconductor memory device capable of improving a reliability of a spare region, capable of improving the reliability of a data region in accordance with a method of use, and capable of realizing a function of an additional writing as a multi-level memory, and an IC memory card using the same, provided with a data region capable of storing 4-level and binary data; a spare region capable of storing binary data; data region use decoders for supplying a drive voltage to the data region; spare region use decoders and for supplying the drive voltage to the spare region; a latch circuit for transferring data with the data region in accordance with the number of levels of the multi-level data to be stored in the data region and stopping the supply of the drive voltage of the sub decoder when the transfer of data is normally completed; and a latch circuit for transferring data with the spare region and stopping the supply of the drive voltage of the sub decoder when the transfer of data is normally completed.

REFERENCES:
patent: 5438648 (1995-08-01), Takaoka et al.
patent: 5584044 (1996-12-01), Gouhara et al.
patent: 5594691 (1997-01-01), Bashir
patent: 5761117 (1998-06-01), Uchino et al.
patent: 5768187 (1998-06-01), Uchino et al.
patent: 5768188 (1998-06-01), Park et al.
patent: 5859795 (1999-01-01), Rolandi
A Multi-Level 32 Mb Flash Memory; ISSCC95/Session 7/Paper TA 7.7; p. 132; M. Bauer et al.

Affiliated with

Also associated with

Rating

Nonvolatile semiconductor memory device and IC memory card using does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nonvolatile semiconductor memory device and IC memory card using, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonvolatile semiconductor memory device and IC memory card using will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-371384