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| HD6433044 Datasheet, PDF (118/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer | |||
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Program execution state
No
Interrupt requested?
Yes
Yes
NMI
No
No
Priority level 1?
Yes
IRQ 0
Yes
No
IRQ 1
Yes
No
ADI
Yes
Pending
IRQ 0
Yes
No
IRQ 1
Yes
No
ADI
Yes
I=0
Yes
Yes
No
UI = 0
No
I=0
Yes
No
Save PC and CCR
I â 1, UI â 1
Read vector address
Branch to interrupt
service routine
Figure 5-6 Process Up to Interrupt Acceptance when UE = 0
104
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