Fujitsu FR81S User Manual
CHAPTER 30: POWER CONSUMPTION CONTROL
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : POWER CONSUMPTION CONTROL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
51
5.8. Stop State of Microcontroller
The stop state of the microcontroller is described below.
When the transition from the state of the standby mode (watch mode/watch mode with
power-shutdown/stop mode/stop mode with power-shutdown) transition prohibition to the standby is
controlled, the standby transition is not concluded.
< State of standby transition prohibition >
1. Connecting OCD
2. Operating PLL
<Standby control not done by microcontroller stop condition>
1. Flash memory power saving control
2. Oscillation stop (At the stop mode stop mode with power-shutdown)
However, the oscillation stop operation is done detecting the illegal standby mode transition when the
standby mode transition control is done while PLL is operating. See "5.9. Transition to Illegal Standby
Mode" for the illegal standby mode transition.
MB91520 Series
MN705-00010-1v0-E
1138