HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 63

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

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