Figure 2-12 Classification of Exception Sources
Figure 2-13 State Transitions
Exception
sources
Reset
Interrupt
Trap instruction
External interrupts
Internal interrupts (from on-chip supporting modules)
Bus-released state
Exception-handling state
Reset state
Program execution state
Sleep mode
Software standby mode
Hardware standby mode
Power-down state
End of bus release
Bus request
End of bus
release
Bus
request
End of
exception
handling
Exception
Interrupt
SLEEP
instruction
with SSBY = 0
SLEEP instruction
with SSBY = 1
NMI, IRQ , IRQ ,
or IRQ interrupt
STBY
RES
= 1, = 0
RES
= 1
0
1
2
*
1
*
2
Notes: 1.
2.
From any state except hardware standby mode, a transition to the reset state occurs
whenever goes low.
From any state, a transition to hardware standby mode occurs when goes low.
RES
STBY
48
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