Panasonic MN101L Series

Chapter 4
Clock/ Mode/ Voltage Control
IV - 24 Mode Control Function
Figure:4.2.14 Operation in STANDBY Mode and Interrupt Acceptance Sequence
with Interrupt Disabled
..
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.
..
NORMAL/SLOW
mode
Disable maskable interrupts
Enable interrupt which
triggers return
Enable maskable interrupts
)
)
(
(
HALT/STOP
mode
NORMAL/SLOW
mode
Set HALT/STOP
mode
Interrupt service routine
Set the xICR.IE of the return factor to "1".
Set the PSW.MIE to "0",
and set all interrupt enable bits (xICR.IE) to "0"
.
Watchdog timer
HALT0/1/2/3 : continue counting
STOP : stop counting
R
eturn factor interrupt occured
R
eturn factor interrupt detected
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
STOP : restart counting
)(
Set the PSW.MIE to "1".