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Rev. 1.0, 07/01, page 62 of 372
RTE
instruc-
tion
prefetch
Register setting
• ABRKCR = H'10
Program
0258
025A
025C
0260
0262
:
NOP
NOP
MOV.W @H'025A,R0
NOP
NOP
:
039C
Address
bus
φ
Interrupt
request
039E SP SP+2 025C 025E
Interrupt request
is disabled
0260
NOP
instruc-
tion
prefetch
MOV
instruc-
tion 1
prefetch
MOV
instruc-
tion 2
prefetch
NOP
instruc-
tion
prefetch
Stack
restore
Internal
processing
MOV
instruc-
tion
execution
025A
Interrupt acceptance
0262 SP-2 SP-4 XXXX
NOP
instruc-
tion
prefetch
Vector
fetch
Internal
processingStack restore
Internal
processing
:
039A
039C
039E
:
:
NOP
RTE
NOP
:
Interrupt
Interrupt
Underline indicates the
address to be stacked.
When the interrupt acceptance is disabled after the RTE (RTB) instruction
Address
bus
φ
Interrupt
request
Continues
to the
lower
Figure 4-2 Address Break Interrupt Operation Example (3)