Fujitsu FR81S User Manual
CHAPTER 30: POWER CONSUMPTION CONTROL
2. Features
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : POWER CONSUMPTION CONTROL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
4
2. Features
This section explains features of the power consumption control.
Clock control
Clock division
By changing the division ratio for each running clock, the operating frequency can be lowered
accordingly. See "CHAPTER: CLOCK".
accordingly. See "CHAPTER: CLOCK".
Sleep mode
CPU sleep mode
In this mode, the only CPU core stops operating.
Bus sleep mode
In this mode, both the CPU core and on-chip buses stop operating.
Standby mode
Watch mode
In this mode, all operations except some clock oscillations and the timer stop.
Stop mode
In this mode, all clock oscillations and operations stop.
Standby mode with power-shutdown
Watch mode with power-shutdown
In this mode, the device is turned the power off. And all operations except some clock oscillations and
the timer stop.
the timer stop.
Stop mode with power-shutdown
In this mode, the device is turned the power off and all clock oscillations and operations stop.
MB91520 Series
MN705-00010-1v0-E
1091