Patent ID: 9030877
Filing Date: 2015-05-12
Classification: G11C,H01L

Abstract:
1. A memory cell arrangement, comprising: a substrate; at least one memory cell, comprising a charge storing memory cell structure, a select structure, a first source/drain region located proximate to the select structure and a second source/drain region located distant from the select structure, wherein the select structure comprises a select gate configured as a spacer and laterally disposed from a sidewall of the charge storing memory cell structure; a first doping well and a second doping well, wherein the charge storing memory cell structure is arranged in or above the first doping well, the first doping well is arranged within the second doping well and the second doping well is arranged within the substrate; a bitline coupled to the first source/drain region located proximate to the select structure; and a control circuit coupled with the memory cell and configured to control the memory cell such that the charge storing memory cell structure is programmed and erased by charging and discharging the charge storing memory cell structure via at least the first doping well, wherein the control circuit is configured to program the charge storing memory cell structure by source side injection comprising applying electrical voltages to the select structure, the charge storing memory cell structure, the first source/drain region through the bitline and second source/drain region, such that electrons in a channel region located between the first and second source/drain regions are accelerated from the first source/drain region located proximate to the select structure towards the second source/drain region located distant from the select structure and are injected into the charge storing memory cell structure from a part of the channel region located under the charge storing memory cell structure and proximate to the select structure, and wherein the control circuit is configured to erase the charge storing memory cell structure by Fowler-Nordheim erase via at least the first doping well.