| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric power steering device capable of surely executing storage processing of data including an error detection code, even when power supply voltage is lowered, in data storage processing to a non-volatile memory. SOLUTION: A storage region of the non-volatile memory is divided into three data blocks 1 to 3 to perform a memory control. Before writing data in each data block, whether or not the power supply voltage is normal is determined. When the power supply voltage is normal (power supply voltage is not lowered), writing is performed. When the power supply voltage is already lowered, the processing is finished. By setting storage capacity of each data block to be smaller and shortening writing time, writing processing can be surely executed also when lowering of the power supply voltage occurs during data writing. COPYRIGHT: (C)2009,JPO&INPIT |
