Renesas M16C/62P Hardware Manual page 267

Renesas 16-bit single-chip microcomputer
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M16C/62P Group (M16C/62P, M16C/62PT)
Transfer the low-power consumption mode program
to a space other than the flash memory
Jump to the low-power consumption mode
program transferred to a space other than the
flash memory. (In the following steps, use the
low-power consumption mode program in a
space other than the flash memory.)
NOTES:
1. Set the FMSTP bit to "1" after the FMR01 bit is set to "1"
(CPU rewrite mode enabled).
2. Wait until clock stabilizes to switch clock source of the
CPU clock to the main clock or sub clock.
3. Add tps µs wait time by program. Do not access the flash
memory during this wait time.
4. Before entering wait mode or stop mode, be sure to set
the FMR01 bit to "0".
Figure 22.7 Processing Before and After Low Power Dissipation Mode
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2
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0
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2
0
0
4
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page 253
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Low-power consumption
mode program
Set the FMR01 bit to "1" after setting it to "0"
(CPU rewrite mode enabled)
Set the FMSTP bit to "1" (The flash memory stops
operating. It is in a low-power consumption state)
Switch clock source of the CPU clock.
The main clock stops.
Process in low-power consumption mode or
on-chip oscillator low-power consumption mode
Start main
Wait until
clock
oscillation
oscillation
stabilizes
Set the FMSTP bit to "0" (flash memory operation)
Set the FMR01 bit to "0"
(CPU rewrite mode disabled)
Wait until the flash memory stabilizes (tps µs)
Jump to a desired address in the flash memory
22. Flash Memory Version
(1)
(2)
(4)
Switch clock
source of the
(2)
CPU clock
(3)

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