Inventors:
Giulio Casagrande - Vignate, IT
Tyler Lowrey - San Jose CA
Roberto Bez - Milan, IT
Guy Wicker - Southfield MI
Edward Spall - Manassas VA
Stephen Hudgens - Santa Clara CA
Wolodymyr Czubatyj - Warren MI
Assignee:
STMicroelectronics S.r.l. - Agrate Brianza
Ovonyx, Inc. - Troy MI
International Classification:
G11C 1706
Abstract:
A memory device including a plurality of memory cells, a plurality of insulated first regions of a first type of conductivity formed in a chip of semiconductor material, at least one second region of a second type of conductivity formed in each first region, a junction between each second region and the corresponding first region defining a unidirectional conduction access element for selecting a corresponding memory cell connected to the second region when forward biased, and at least one contact for contacting each first region; a plurality of access elements are formed in each first region, the access elements being grouped into at least one sub-set consisting of a plurality of adjacent access elements without interposition of any contact, and the memory device further includes means for forward biasing the access elements of each sub-set simultaneously.