Semiconductor memory device and data erase method for it

Details Semiconductor memory device and data erase method for it Semiconductor memory device and data erase method for it

1993-11-01

1995-04-11

Fears, Terrell W.

Static information storage and retrieval

Read/write circuit

Erase

365185, 365900, G11C 1300

Patent

active

054065216

ABSTRACT:
A semiconductor memory device comprises a plurality of word lines (WL1, WL2), a plurality of bit lines (BL1, BL"), a plurality of memory cells (MC11, MC12) each includes a transistor (9) formed on a first semiconductor region (3) and having a floating gate (6), a control gate (8) connected to one of said word lines, a source region (5s) and a drain region (5d) connected to a first end of one of said bit lines, and further comprises a source line (SL) having a first capacitance thereof different from a second capacitance which is associated with said bit lines (BL1, BL2) and having a first end thereof connected to said source region, a first bias means (14) for charging said bit lins and said source line via said first semicondictor region to a high voltage level (Vcc) during a first time period and supplying a low voltage level (Vss) to said first semiconductor region during a second time period thereafter, wherein said low voltage level causes a voltage difference and a current between said source and drain region according to a difference between said first and second capacitance, by which current electrons are injected to said floating gate.

REFERENCES:
N. Kodama et al., "A 5V Only 16 Mbit Flash EEPROM Cell Using Highly Reliable Write/Erase Technologies", VLSI Symp. 1991, pp. 75-76.
S. Aritome et al., "A Reliable Bi-Polarity Write-Erase Technology in Flash EEPROMS", IEDM 90, pp. 111-114.
Nikkei Microdevice, Mar., 1990, pp. 72-76.

Affiliated with

Also associated with

Rating

Semiconductor memory device and data erase method for it does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Semiconductor memory device and data erase method for it, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semiconductor memory device and data erase method for it will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1543492