44
Sleep mode
I/O-1/
IRQ
= low
or
I/O-2/
IRQ
= low
Execution of interrupt-
handling routine
RTE instruction
Figure 2.15 Recovery from Sleep Mode
Note:
The
RES
, I/O-1/
IRQ
, and I/O-2/
IRQ
signals must be held high during sleep mode.
Sleep mode
CLK
CCR I bit
CLK = 0 MHz to t
cyc
I/O-1/
IRQ
or
I/O-2/
IRQ
State
IRQ
Operating state
Power-down state
Operating state
CCR I bit cleared to 0
Interrupt exception
handling
SLEEP instruction
Figure 2.16 Interrupt Timing in Sleep Mode