Patent attributes
The present invention makes it possible to inexpensively and quickly execute a process of rewriting data stored in a memory, thus reducing the power consumption of an information processing apparatus. In connection with a conventional Read-Modify-Write function, an information processing apparatus 1 first issues a write instruction, and after all the write commands in the write instruction have been issued, issues read commands from the read instruction. That is, the read commands are issued immediately after the write commands without issuing a precharge command from the write instruction or an active command from the read instruction. This serves to avoid executing the precharge and active commands between instructions which commands are unwanted for accesses to the same row address. The adverse effect of a CAS latency can also be avoided. Therefore, it is possible to inexpensively and quickly execute the process of rewriting data stored in the memory.
