Semiconductor memory device e.g. ROM

摘要

The semiconductor device, e.g. ROM (1000), includes several columns (UB,DB) and an output part (CS1,CS2). Each column contains a number of memory cells (M10-M31) and the output part is connected to the columns. Each of the memory cells are switchable to an on or off state and at least one of the cells is in an off state. The memory cells, including the at least one off state cell, are programmed with scheduled data. A data inverter (IV) is connected to at least one of the columns to invert data output via the output part.