| 摘要 |
A periodic update time is saved on an SRAM 213 and an auto-shutdown time is saved on the SRAM 213. When the saved auto-shutdown time is reached, if the periodic update time is set to a time that is after auto-shutdown, a shutdown is not performed, a return time is set to a time that is before the periodic update time, and a sleep mode is entered. A return from sleep is performed at a return time and the periodic update is carried out. |
