| 摘要 |
PURPOSE: To exclude the erroneous readout of data and to operate a home controller normally by judging whether or not the data is being written on a ROW and performing such control so as not to perform readout and write simultaneously. CONSTITUTION: A control part 4, when two application programs(AP) being operated alternately periodically, sets a judging flag when the AP on one side writes the data on a memory area 8. When the AP on the other side reads out the data from the area 8, the Judging flag is checked, and when it is already set, a standby state is set until the judging flag is reset. When the AP on one side completes the write and the judging flag is reset, the AP on the other side can perform the readout at this time. Therefore, it is possible to exclude simultaneous read/write work by using the reset/set of the judging flag as a judging means while the write on flash memory is being performed, which excludes the erroneous readout of the data. |
