Wordline driver for flash electrically erasable programmable rea

Details Wordline driver for flash electrically erasable programmable rea Wordline driver for flash electrically erasable programmable rea

1998-10-05

2000-10-17

Nelms, David

Static information storage and retrieval

Floating gate

Particular biasing

36518533, 36518529, G11C 1604

Patent

active

061341460

ABSTRACT:
A flash Electrically-Erasable Programmable Read-Only Memory (EEPROM) includes a plurality of floating gate transistor memory cells, a plurality of wordlines connected to the cells and a power source for generating a low power supply voltage on the order of 3 V or less. A wordline driver includes a booster for boosting the supply voltage to produce a wordline read voltage which is higher than the supply voltage, and applying the wordline voltage to a wordline. An upper clamp limits a maximum value of the wordline voltage to prevent read disturb. The upper clamp can be configured to reduce an amount by which the maximum value varies with the supply voltage, or to limit the maximum value to substantially a predetermined value. A lower clamp limits the wordline voltage to a minimum value which is higher than the supply voltage and lower than the maximum value for a predetermined length of time at the beginning of the read operation to ensure that the cells have sufficient read current and to reduce the amount by which the minimum value varies with the supply voltage.

REFERENCES:
patent: 5265052 (1993-11-01), D'Arrigo et al.
patent: 5333122 (1994-07-01), Ninomiya
patent: 5371705 (1994-12-01), Nakayama et al.
patent: 5455789 (1995-10-01), Nakamura et al.
patent: 5550775 (1996-08-01), Abe et al.
patent: 5587951 (1996-12-01), Jazayeri et al.
patent: 5668758 (1997-09-01), Yiu et al.

Affiliated with

Also associated with

Rating

Wordline driver for flash electrically erasable programmable rea does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wordline driver for flash electrically erasable programmable rea, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wordline driver for flash electrically erasable programmable rea will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-475694