Renesas M16C/60 Series Hardware Manual page 281

Under development
This document is under development and its contents are subject to change.
M16C/6N5 Group
Transfer a low power dissipation mode program
to any area other the flash memory
Jump to the low power dissipation mode program
which has been transferred to any area other than
the flash memory
(The subsequent processing is executed by a program
in any area other than the flash memory.)
Note 1: Set the FMSTP bit to "1" after setting the FMR01 bit to "1" (CPU rewrite mode).
Note 2: Before the clock source for CPU clock can be changed to main clock or sub clock, the clock to which to be changed
must be stable.
Note 3: Insert t
Figure 1.22.7 Processing Before and After Low Power Dissipation Mode
Rev.1.00 2003.05.30 page 267
wait time in a program. The flash memory cannot be accessed during this wait time.
ps
Low power dissipation
mode program
Set the FMR01 bit by writing "0" and then "1"
(CPU rewrite mode enabled)
Set FMSTP bit to "1"
(flash memory stopped. Low power state) (Note 1)
Switch the clock source for CPU clock.
Turn main clock off. (Note 2)
Process of low power dissipation mode or
ring oscillator low power dissipation mode
Turn main clock on - > wait until oscillation stabilizes - >
switch the clock source for CPU clock (Note 2)
Set the FMSTP bit to "0" (flash memory operation)
Write "0" to the FMR01 bit
(CPU rewrite mode disabled)
Wait until the flash memory circuit stabilizes (t
(Note 3)
Jump to a specified address in the flash memory
Flash Memory
)
ps