HT68F14 HOLTEK [Holtek Semiconductor Inc], HT68F14 Datasheet - Page 35

• Manufacturer Part Number: HT68F14
• Description: Enhanced I/O Flash Type MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

HT68F13/HT68F14/HT68F15
Enhanced I/O Flash Type MCU
Rev. 1.10
NORMAL Mode to SLOW Mode Switching
When running in the NORMAL 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 HLCLK bit to
0 and set the CKS2~CKS0 bits to ²000B² or ²001B² in the SMOD 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 LIRC oscillator and therefore requires these oscillators to be
stable before full mode switching occurs. This is monitored using the LTO bit in the SMOD register.
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February 9, 2011