| 摘要 |
PURPOSE:To ensure the alternative selection for plural memories without providing any selecting terminal, by applying also the memory IC selection signal at an early driving period of a memory IC. CONSTITUTION:The selection signals of memories IC9, IC10, etc. of 2 bits, etc. are applied to the first command which discriminates the read/write of an address given from a control IC8, the read/write of a data, etc. As a result, the objects IC9, IC10, etc. are selected alternatively without using any selecting terminal such as a chip selecting terminal, a chip enable terminal, etc. |
