Abstract:
Method for refreshing data stored in an electrically erasable and programmable non-volatile semiconductor memory comprising at least one two-dimensional array (1) of memory cells (MC) containing a plurality of individually erasable and programmable memory pages (R). Each time a request to modify a content of a memory page is received by the memory, the method provides for modifying (201;502;602) the content of said memory page and submitting a portion (S1-SZ;R) of the two-dimensional array to a refresh procedure (202-208;501,503-509;601,603-612). The refresh procedure comprises detecting (203;505;606) memory cells of that memory portion that have partially lost a respective datum stored therein and reprogramming the datum in the detected memory cells.
Abstract:
During critical plasma etching steps, the wafer's surface is illuminated with electromagnetic radiation in the visible and/or in UV spectrum of energy and power density sufficient to enhance the reverse current through protective junctions that are commonly realized for providing electrical discharge paths for electrical charges picked up by exposed conductive parts to limit the level of induced voltages to values compatible with the preservation of the integrity of functional dielectric layers coupled to the exposed conductors parts and to the semiconductor substrate or to another conductive part.
Abstract:
Field effect transistor (1) integrated on a semiconductor substrate (4) with a respective active area (8) comprising:
a region of source (2) and a region of drain (3) formed in the semiconductor substrate (4), a channel region (5) interposed between said regions of source (2) and of drain (3) having a predefined nominal width (W N ), wherein said channel region (5) has an effective width (Weff) defined by a variable profile of doping.
Abstract:
A circuit structure integrated in a semiconductor substrate (40) comprises at least one pair of transistors (20,21) being formed each in a respective active area region (30) and having a source region (22) and a drain region (23), as well as a channel region (24) intervening between the source and drain regions (22,23) and being overlaid by a gate region (25); the gate regions (25) are connected electrically together by an overlying conductive layer (28) and respective contacts (14) wherein the contacts (14) between the gate regions (24) and the conductive layer (28) are formed above the active areas (30).
Abstract:
A structure of electronic devices integrated in a semiconductor substrate with a first type of conductivity comprising at least a first HV transistor and at least a second LV transistor, each having a corresponding gate region. Said first HV transistor has lightly doped drain and source regions with a second type of conductivity, and said second LV transistor has respective drain and source regions with the second type of conductivity, each including a lightly doped portion adjacent to the respective gate region and a second portion which is more heavily doped and comprises a silicide layer.
Abstract:
The invention relates to a non-volatile memory cell and a manufacturing process therefor. The cell (1,10) is integrated in a semiconductor substrate (2) and comprises:
a floating gate transistor (3,30) having a first source region (17,170), first drain region (15,150), and gate region (5,50) projecting over the substrate (2) and intervening between the first source and drain regions (17,15;170,150); and a selection transistor (4,40) having a second source region (19,190), second drain region (20,200), and respective gate region (23,230), projecting over the substrate (2), between the second source and drain regions (19,20;190,200). The first and second regions are lightly doped and the cell comprises mask elements (31a, 310a).