Section 2 CPU
Rev. 7.00 Mar 10, 2005 page 58 of 652
REJ09B0042-0700
CPU state Reset state
Program
execution state
Program halt state
Exception-
handling state
Active
(high speed) mode
Active
(medium speed) mode
Subactive mode
Sleep (high-speed)
mode
Standby mode
Watch mode
Subsleep mode
Low-power
modes
The CPU executes successive program
instructions at high speed,
synchronized by the system clock
The CPU executes successive
program instructions at
reduced speed, synchronized
by the system clock
The CPU executes
successive program
instructions at reduced
speed, synchronized
by the subclock
A state in which some
or all of the chip
functions are stopped
to conserve power
A transient state in which the CPU changes
the processing flow due to a reset or an interrupt
The CPU is initialized
Note: See section 5, Power-Down Modes, for details on the modes and their transitions.
Sleep (medium-speed)
mode
Figure 2.14 CPU Operation States
To Next Page
Loading...
Need help?
General
