| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power-saving controller which saves on power during power-saving time and reduces the time to return from a power-saving mode, using an inexpensive constitution in either case. <P>SOLUTION: The power-saving controller downloads a program stored in a slow memory 4 into a volatile fast memory 6 to execute the program. In the power-saving mode, the power of a CPU 1 is turned off and the fast memory 6 has its power backed up to retain the program downloaded; the potential of backup voltage is detected and a method of recovery from the power-saving mode is changed according to power-saving mode information stored in a nonvolatile RAM 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
