Low Power Consumption Mode - Fujitsu MB90460 Series Hardware Manual

CHAPTER 6 LOW POWER CONSUMPTION MODE
6.1

Low Power Consumption Mode

2
F MC-16LX microcontrollers have the following CPU operating modes, any of which can
be used depending on the operating clock selection and clock operation control:
• Clock mode (PLL clock mode and main clock mode)
• CPU intermittent operation mode (PLL clock intermittent operation mode and main
clock intermittent operation mode)
• Standby mode (sleep, time-base timer and stop modes)
All modes other than PLL clock mode are low power consumption mode.
■ CPU Operating Modes and Current Consumption
Figure 6.1-1 shows the relation between the CPU operating modes and current consumption
Several tens
of mA
Several mA
Several µA
Note:
This figure is only an indication of the degree of power consumption for each mode. Actual
current consumption values may not agree with those in the figure.
90
Figure 6.1-1 CPU Operating Modes and Current Consumption
Current consumption
CPU operating
mode
Low power consumption mode
PLL clock mode
PLL clock intermittent operation mode
Main clock mode (1/2 clock mode)
Main clock intermittent operation mode
Standby mode
Multiplied-by-four
clock
Multiplied-by-three
clock
Multiplied-by-two
clock
Multiplied-by-1
clock
Multiplied-by-four
clock
Multiplied-by-three
clock
Multiplied-by-two
clock
Multiplied-by-1
clock
Sleep mode
Time-base timer mode
Stop mode