公开(公告)号：IT1318158B1

公开(公告)日：2003-07-23

申请号：ITMI20001585

申请日：2000-07-13

Applicant: ST MICROELECTRONICS SRL

Inventor： KHOURI OSAMA ,  PIERIN ANDREA ,  MICHELONI RINO ,  GREGORI STEFANO ,  TORELLI GUIDONO ,  SANGALLI MIRIAM

IPC: G11C16/08

Abstract: A circuit device for performing hierarchic row decoding in semiconductor memory devices of the non-volatile type, which memory devices include an array of memory cells with column-ordered sectors, wherein each sector has a respective group of local wordlines linked to a main wordline. The circuit device includes a main wordline driver provided at each main wordline, and a local decoder provided at each local wordline. This circuit device further comprises, for each main wordline, a dedicated path connected between the main wordline and the local decoders of the associated local wordlines and connected to an external terminal arranged to receive a read/program voltage, the dedicated path enabling transfer of the read/program voltage to the local decoders.