An electrically-erasable, electrically-programmable, read-only-memory cell array is formed in pairs at a face of a semiconductor substrate (22). Each memory cell includes a source region (11) and a drain region (12), with a corresponding channel region between. A Fowler-Nordheim tunnel-window (13a) is...http://www.google.com/patents/US5523249?utm_source=gb-gplus-sharePatent US5523249 - Method of making an EEPROM cell with separate erasing and programming regions
