PROGRAMMABLE READ ONLY MEMORY

摘要

PURPOSE: A programmable read only memory is provided to form a fuse cell array by connecting program terminals to program voltage terminals through stacked conductive layers. CONSTITUTION: A least two conductive layers are stacked. A first cell(206-A) includes a transistor(210-A) with at least a first terminal. The first terminal is connected conductively to the voltage supply terminal by a part of conductive layers. The first cell includes a fuse(208-A) connected conductively to a transistor. The fuse is selected from one or more metal and polysilicon.