Panasonic MN101L Series User Manual page 166

Chapter 4
Clock/ Mode/ Voltage Control
Figure:4.2.14 Operation in STANDBY Mode and Interrupt Acceptance Sequence
Set the PSW.MIE to "0" before the transition to STANDBY mode.
.. ..
Insert 3 NOP instructions right after the instruction for the transition to STANDBY mode (set-
ting to CPUM.HALT or CPUM.STOP).
.. ..
The instruction for the transition to STANDBY mode must not be executed in the internal
RAM.
.. ..
IV - 24 Mode Control Function
NORMAL/SLOW
Disable maskable interrupts
Enable interrupt which
triggers return
Return factor interrupt occured
Set HALT/STOP
HALT/STOP
Return factor interrupt detected
NORMAL/SLOW
Enable maskable interrupts
mode
Set the PSW.MIE to "0",
and set all interrupt enable bits (xICR.IE) to "0".
Set the xICR.IE of the return factor to "1".
mode
Watchdog timer
(
HALT0/1/2/3 : continue counting
mode
STOP : stop counting
(
When the transition corresponds to (*1) in Figure: 4.2.1,
the oscillation stabilization wait time is inserted.
Watchdog timer
(
HALT0/1/2/3 : continue counting
mode
STOP : restart counting
Set the PSW.MIE to "1".
Interrupt service routine
with Interrupt Disabled
)
)
)