Method of sense and program verify without a reference cell...

Details Method of sense and program verify without a reference cell... Method of sense and program verify without a reference cell...

2006-02-14

2006-02-14

Tran, M. (Department: 2827)

Static information storage and retrieval

Floating gate

Particular biasing

C365S185220

Reexamination Certificate

active

06999345

ABSTRACT:
A method and circuit for verify and read of a nonvolatile memory cell without the use of a reference cell is described. The circuit comprises a sense amplifier that compares a voltage from the output of a read path of a selected bit line to a reference voltage. When the selected memory cell is erased, the bit line voltage is small pulling down the read path voltage below the reference voltage, which causes a sense amplifier output that is a logical “0”. When the selected cell has been programmed, the raise of the bit line voltage causes the bit line to be decoupled from the output of the read path. The read path output then continues to charge to a voltage higher than the reference voltage resulting in a logical “1” at the output of the sense amplifier.

REFERENCES:
patent: 5124945 (1992-06-01), Schreck
patent: 5444656 (1995-08-01), Bauer et al.
patent: 5559737 (1996-09-01), Tanaka et al.
patent: 5712815 (1998-01-01), Bill et al.
patent: 6003051 (1999-12-01), Okazaki
patent: 6009015 (1999-12-01), Sugiyama
patent: 6031760 (2000-02-01), Sakui et al.
patent: 6044019 (2000-03-01), Cernea et al.
patent: 6075727 (2000-06-01), Morton et al.
patent: 6618297 (2003-09-01), Manea
patent: 6768354 (2004-07-01), Yamazaki et al.

Affiliated with

Also associated with

Rating

Method of sense and program verify without a reference cell... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of sense and program verify without a reference cell..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of sense and program verify without a reference cell... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3639821