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5 standby mode, Standby mode – FUJITSU F2MCTM-16LX User Manual

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CHAPTER 8 LOW-POWER CONSUMPTION MODE

8.5

Standby Mode

The standby mode causes the standby control circuit to either stop supplying an
operation clock to the CPU or peripheral functions or to stop the oscillation clock
reducing power consumption.

Operation Status during Standby Mode

Table 8.5-1 shows operation status during standby mode.

Table 8.5-1 Operation Status during Standby Mode

Mode name

Transition

conditions

Oscillation

clock

(HCLK)

Sub-clock

(SCLK)

Machine

clock

CPU

Peripheral

function

Pin Release

method

Sleep
mode

Main sleep
mode

MCS=1
SCS=1
SLP=1

External reset or
interrupt

Sub-sleep
mode

MCS=X
SCS=0
SLP=1

External reset or
interrupt

PLL sleep
mode

MCS=0
SCS=1
SLP=1

External reset or
interrupt

Timebase
timer
mode

SPL=0

MCS=X
SCS=1
TMD=0

*1

External reset or

interrupt

*4

SPL=1

MCS=X
SCS=1
TMD=0

*1

Hi-Z

*3

External reset or

interrupt

*4

Watch
mode

SPL=0

MCS=X
SCS=0
TMD=0

*2

External reset or

interrupt

*5

SPL=1

MCS=X
SCS=0
TMD=0

*2

Hi-Z

*3

External reset or

interrupt

*5

Stop
mode

SPL=0

STP=1

External reset or

interrupt

*6

SPL=1

STP=1

Hi-Z

*3

External reset or

interrupt

*6