| 摘要 |
A merged semiconductor device having a DRAM and an SRAM, and a data transmitting method using the same are provided. In this device, the DRAM acts as a main memory, and the SRAM acts as a cache memory. The reading operation of the DRAM, and the writing operation of the SRAM are simultaneously controlled by a DRAM read control signal. Also, the writing operation of the DRAM, and the reading operation of the SRAM are simultaneously controlled by a DRAM write control signal. In this device, DRAM write commands and DRAM read commands can be continuously given. Writing of the SRAM starts after reading of the DRAM is completed, and writing of the DRAM starts after reading of the SRAM is completed.
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