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M16C/5L Group, M16C/56 Group
h. Entering 125 kHz on-chip oscillator mode from 125 kHz on-chip oscillator low power mode
Entering low-speed mode from low power mode
Follow both or either of the procedures below (in no particular order).
(1) Start the main clock and wait until the oscillation stabilizes. Refer to 8.3.1 "Main Clock" for
details.
(2) Start the 40 MHz on-chip oscillator and wait until the oscillation stabilizes. Refer to 8.3.4 "fOCO-
F" for details.
i.
Entering 125 kHz on-chip oscillator mode from 40 MHz on-chip oscillator mode
(1) Start the 125 kHz on-chip oscillator and wait until the oscillation stabilizes. Refer to 8.3.5 "125
kHz On-Chip Oscillator Clock (fOCO-S)" for details.
(2) Set the CM06 bit to 1 (divide-by-8 mode) or the bits FRA22 to FRA20 to 110b (divide-by-8
mode).
(3) Set the FRA01 bit to 0 (125 kHz on-chip oscillator).
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
9. Power Control
Page 128 of 803
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