Panasonic MN101L Series User Manual page 163

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NORMAL/SLOW mode
CPUM.XIMOD == 1
Transition to HALT3 mode
(Set the CPUM as described in Table 4.1.3.)
HALT3 mode
Figure:4.2.11 Transition Flow from CPU Operating Mode to HALT3 Mode
If the value of xICR.LV1-0 for an interrupt to be used as a return factor is equal or larger than
the value of PSW.IM1-0 before transition to STANDBY mode, it is impossible to return to
CPU operating mode by a maskable interrupt.
..
..
NO
Start the low-speed oscillation (*)
YES
CPUM.XIMOD = 1
The low-speed oscillation
stabilization wait time
(*) When SCLKCNT.SOSCCNT=1, SOSCCLK starts.
When SCLKCNT.SRCCNT=1, SRCCLK starts.
Chapter 4
Clock/ Mode/ Voltage Control
Mode Control Function
IV - 21

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