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Setting subclock mode
If the subclock mode is used, the following settings are required:
❍ If subclock mode is used at an internal clock frequency of 10 MHz or less
To use the subclock mode, change the low-power consumption mode selection bits (LPM1,
LPM0) of the flash memory control status register to other than 0, 0 at initialization. Figure 23.3-
2 shows a flowchart example.
Figure 23.3-2 Flowchart example in which subclock mode is used at
an internal clock frequency of 10 MHz or less
START
Set low-power consumption mode
Set FMCS register
Is mode changed
to subclock mode?
YES
Change to subclock mode
Set CKSCR register
Enter subclock mode
CHAPTER 23 2M/3M BIT FLASH MEMORY
NO
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