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| HD64F2149 Datasheet, PDF (160/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer | |||
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Program execution state
No
Interrupt generated?
Yes
Yes
NMI?
No
Control level 1
No
interrupt?
Yes
No
IRQ0?
Yes
No
IRQ1?
Yes
IBFI3?
Yes
Hold pending
No
IRQ0?
Yes
No
IRQ1?
Yes
IBFI3?
Yes
I = 0?
Yes
Yes
No
UI = 0?
I=0
No
No Yes
Save PC and CCR
I â 1, UI â 1
Read vector address
Branch to interrupt handling routine
Figure 5.10 Flowchart of Procedure Up to Interrupt Acceptance in
Interrupt Control Mode 1
126
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