EKTF6708 datasheet(26/158 Pages) EMC

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eKTF6708

8-Bit Microcontroller



IC Product Specification (V1.2) 03.12.2020

(This specification is subject to change without prior notice)

0: “IDLE=0”+SLEP instruction

 sleep mode

1: “IDLE=1”+SLEP instruction

 idle mode (default)

Normal mode

Fm: oscillation

Fs: oscillation

CPU: using Fm

Sleep mode

Fm: stop

Fs: stop

CPU: stop

Green mode

Fm: stop

Fs: oscillation

CPU: using Fs

Idle mode

Fm: stop

Fs: oscillation

CPU: stop

CPUS=1

CPUS=0

Code option

HLFS=1

RESET

Code option

HLFS=0

Interrupt or

wakeup

IDLE=1

+ SLEP

IDLE=1

+ SLEP

Interrupt or

wakeup

IDLE=0

+ SLEP

IDLE=0

+ SLEP

wakeup

(*)(**)

Figure 6-2 CPU Operation Mode

Note

(

If Watchdog function is enabled before entering into sleep mode, some circuits, such as timer (Its

clock source is Fs) must stop counting.

If Watchdog function is enabled before entering into sleep mode, some circuits, such as timer (Its

clock source is external pin) can still count and its interrupt flag can be active at matching condition

as corresponding interrupt is enabled. But CPU cannot be woken up by this event.

(

**)

Switching Operation Mode at sleep

 Normal, Green  Normal:

If the clock source of the timer is Fm, the timer/counter must stop counting at sleep or green mode.

Then, timer can continue to count until clock source is stable at normal mode. A stable clock source

means CPU starts to work at normal mode.

Switching Operation Mode at Sleep

 green:

If the clock source of the timer is Fs, the timer must stop counting at sleep mode. Then, the timer can

continue to count until the clock source is stable at green mode. A stable clock source means that

CPU starts to work at green mode.

Switching Operation Mode at Sleep

 Normal:

If the clock source of the Timer is Fs, the timer must stop counting at sleep mode. Then, the timer can

continue to count until the clock source is stable at normal mode. A stable clock source means that

CPU starts to work at normal mode.

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