SH7052 Datasheet, PDF (119/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Program
execution state
Interrupt?
No
Yes
NMI?
No
Yes
User break?
No
Yes
H-UDI
interrupt?
Yes
Yes
Save SR to stack
Save PC to stack
Copy accept-interrupt
level to I3 to I0
Read exception
vector table
Branch to exception
service routine
I3 to I0: Interrupt mask bits of status register
No
Level 15 No
interrupt?
Yes
I3 to I0 ≤
level 14?
No _Yes
Level 14
interrupt?
Yes
I3 to I0 ≤
level 13?
No
Level 1 ^No
interrupt?
Yes
No Yes
I3 to I0 =
level 0?
No
Figure 6.2 Interrupt Sequence Flowchart
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