SH7011 Datasheet, PDF (78/292 Pages) Renesas Technology Corp – CMOS single-chip microprocessors

Program
execution state
Interrupt?
No
Yes
NMI?
No
Yes
Save SR to stack
Level 15 No
interrupt?
Yes
Yes _{I3 to I0 ≤}
level 14?
Level 14
interrupt?
Yes
No _{Yes I3 to I0 ≤}
level 13?
No
Level 1 ^No
interrupt?
Yes
No Yes
I3 to I0 =
level 0?
No
Save PC to stack
Copy accept-interrupt
level to I3 to I0
Reads exception
vector table
Branches to exception
service routine
I3 to I0: Interrupt mask bits of status register
Figure 6.3 Interrupt Sequence Flowchart
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