| 摘要 |
<p>PROBLEM TO BE SOLVED: To save power consumption by eliminating the need of ensuring an extra area in a SRAM as a area for saving data stored in a DRAM to the SRAM during shifting to a power saving mode, in a semiconductor device provided with the DRAM and the SRAM. SOLUTION: When a power saving mode shift command is inputted, a stack saving processing portion 105 saving data stored in the DRAM 103 in a stack area 102b of the SRAM 102. After the data stored in the DRAM 103 is saved in the stack area 102b of the SRAM 102, a power saving mode shift processing portion 104 stops a refresh action of the DRAM 103, and shifts to the power saving mode.</p> |
