| 摘要 |
PROBLEM TO BE SOLVED: To easily discriminate an address error from a data error, while reducing communication time per data-write operation.SOLUTION: Data in an EEPROM (first memory) is read and stored in an SRAM (second memory) in advance. An address and write data are transmitted to the EEPROM (S701). After the write data is written in the address, the data in the address written in the EEPROM is read (S702) and compared with the write data (S703). When they are not coincident with each other, the read data is compared with data in an address corresponding to the write address in the data stored in the SRAM (S704). When they are coincident with each other, an address error is determined (S705). When they are not coincident with each other, a data error is determined (S707). |
