HD64F3670 Datasheet, PDF (84/305 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

When the interrupt acceptance is prohibited after the RTE (RTB) instruction
Register setting
• ABRKCR = H'10
Interrupt
Interrupt
Program
0258 NOP
025A NOP
025C MOV.W @H'025A,R0
0260 NOP
0262 NOP
:
:
:
039A
039C
039E
:
Underline indicates the
address to be stacked.
:
NOP
RTE
NOP
:
RTE NOP
instruc- instruc-
tion
tion
prefetch prefetch
Stack
resumption
MOV MOV NOP
instruc- instruc- instruc-
Internal tion 1 tion 2 tion
processing prefetch prefetch prefetch
φ
Address
bus
039C 039E SP
SP+2
Interrupt
request
025C
025E
0260
Continues
to the
lower
Interrupt request
is prohibited
MOV NOP
instruc- instruc-
tion
tion Internal
execution prefetch processing
Stack restore
Vector Internal
fetch processing
φ
Address
bus
Interrupt
request
025A
0262
Interrupt acceptance
SP-2 SP-4 XXXX
Figure 4-2 Address Break Interrupt Operation Example (3)
Rev. 1.0, 03/01, page 60 of 280