Holtek BS83B24C Manual page 51

BS83B24C/BS83C40C
Touch Flash MCU
FAST Mode to SLOW Mode Switching
When running in the FAST Mode, which uses the high speed system oscillator, and therefore
consumes more power, the system clock can switch to run in the SLOW Mode by set the
CKS2~CKS0 bits to "111" in the SCC register. This will then use the low speed system oscillator
which will consume less power. Users may decide to do this for certain operations which do not
require high performance and can subsequently reduce power consumption.
The SLOW Mode is sourced from the LXT or LIRC oscillator and therefore requires the oscillator
to be stable before full mode switching occurs.
Rev. 1.00
�HIDEN=0� �SIDEN=0
HALT inst��ction is exec�ted
�HIDEN=0� �SIDEN=1
HALT inst��ction is exec�ted
IDLE0 Mode
�HIDEN=1� �SIDEN=1
HALT inst��ction is exec�ted
IDLE1 Mode
�HIDEN=1� �SIDEN=0
HALT inst��ction is exec�ted
IDLE2 Mode
51
FAST Mode
CKS�~CKS0 = 111
SLOW Mode
SLEEP Mode
�e���a�� 0�� �01�