Low Power Consumption Mode - Fujitsu MB90M405 Hardware Manual

1.10
This section provides an overview of the low power consumption mode.
The onolith (MB90M405) has the following modes that stop various functions and clocks
Chapter 4.
• Relationships between operating modes and power
Operating mode Main clock
PLL Run Operates
Main Run Operates
PLL Sleep Operates
Main sleep Operates
Pseudo-time Operates
Stop Stops
In the above table, the power consumption decreases as the operating mode goes down from the top of the
table.
In the PLL Run mode, operation is performed on the PCLK generated by multiplying the original oscillation by
1 to 4. In the Main Run mode, operation is performed on the MCLK generated by dividing the original
oscillation by 2.
*: In the sleep mode, the CPU stops, so resources cannot be accessed from the CPU.
2
MB90M405 F MC-16LX FAMILY HARDWARE MANUAL
PLL Clock
Operates
Stops
Operates
Stops
Stops
Stops
CPU Resources
Operates
Operates
Stops
Stops
Stops
Stops
1-16
Timer clock
Operates Operates
Operates Operates
Operates* Operates
Operates* Operates
Stops Operates
Stops Stops