Hitachi F-ZTAT H8/3039 Series Hardware Manual page 62

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