| 摘要 |
To provide a processor with low power consumption, particularly a processor in which low power consumption is achieved by reducing leakage current from a high potential power supply line. A circuit of the processor used for a power gating driving method is divided into a first circuit block including a logic circuit and the like and used only in an arithmetic processing period, a second circuit block including a volatile memory element and the like and used in the arithmetic processing period, a data storage period, and a data restorage period, and a third circuit block including a nonvolatile memory element and the like and used in the data storage period and the data restorage period. The first to third circuit blocks are connected to first to third high potential power supply lines, respectively, and these lines are electrically connected to a fourth high potential power supply line which supplies power to the processor, through switches. |
