| 摘要 |
PURPOSE:To make it possible to access to different memory cells by the same input address and to simplify address conversion by connecting the memory cells to plural address decoders. CONSTITUTION:Column addresses 200 are stored in a column address buffer 210 and the output of the buffer 210 is inputted to two column decoders 220, 221 having different decoding rules each other. Row addresses 201 are also inputted to two row decoders 240, 241 having different rules each other. Decoder selecting signals S0, S1 are inputted to a decoder selecting part 260 to select one of the column decoders 220, 221 and one of the row decoders 240, 241. Consequently, the row and column decoders are decided and a memory cell 230 to be accessed is decided. |
