Fujitsu FR81S User Manual
CHAPTER 30: POWER CONSUMPTION CONTROL
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : POWER CONSUMPTION CONTROL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
9
[bit1, bit0] SLVL[1:0] (Standby LeVeL) : Standby level setting
These bits control the operations in standby mode and sleep mode as shown below.
Mode
SLVL[1:0]
Operation control
Stop mode
0x
Does not make pins high impedance.
1x
Makes pins high impedance.
Watch mode
0x
Does not make pins high impedance.
1x
Makes pins high impedance.
Sleep mode
0x
CPU sleep mode (stop only CPU)
1x
Bus sleep mode (stop CPU and on-chip bus) *
* : On-chip bus will run only when DMA transfer is in progress.
For information on the pins with high impedance, see "APPENDIX".
MB91520 Series
MN705-00010-1v0-E
1096