Low voltage, low current hot-hole injection erase and hot-electr

Details Low voltage, low current hot-hole injection erase and hot-electr Low voltage, low current hot-hole injection erase and hot-electr

1997-12-24

1999-09-14

Nguyen, Viet Q.

Static information storage and retrieval

Floating gate

Particular biasing

3651853, 36518533, 36518528, G11C 1140

Patent

active

059532556

ABSTRACT:
An array of MOS memory cells having functionally symmetrical drain and source regions may be programmed and/or erased using low voltage, e.g., less than about 7V. In a NAND-type array, UV-erasure increases threshold voltage Vt to erase memory cell contents, and low voltage-low current hot-hole injection ("HHI") decreases Vt to program the memory cells. For NOR-type arrays, HHI decreases Vt to erase memory cell contents and channel-hot-electron ("CHE") injection increases Vt to program cell contents. Erase and program potentials are low (<7V), enabling arrays to be readily fabricated on a common IC with low voltage circuits. Because HHI strongly converges Vt, the memory cells may store more than two data values, which increases cell storage density. Cell symmetry permits swapping drain for source before cell endurance becomes too troublesome, which swapping can substantially increase the endurance lifetime for an array. Arrays may be used as flash memory, as EPROM replacement, or as one-time-programmable memory.

REFERENCES:
patent: 5060195 (1991-10-01), Gill et al.
patent: 5111430 (1992-05-01), Morie
patent: 5216269 (1993-06-01), Middehoek et al.
patent: 5398202 (1995-03-01), Nakamura
patent: 5477068 (1995-12-01), Ozawa
patent: 5521867 (1996-05-01), Chen et al.
patent: 5798548 (1998-08-01), Fujiwara

Affiliated with

Also associated with

Rating

Low voltage, low current hot-hole injection erase and hot-electr does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Low voltage, low current hot-hole injection erase and hot-electr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low voltage, low current hot-hole injection erase and hot-electr will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1516443