SH7263 Datasheet, PDF (206/1862 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7260 Series

Section 6 Interrupt Controller (INTC)
Program
execution state
Interrupt?
Yes
NMI?
Yes
No
No
User break?
Yes
IRQOUT = low
Read exception
handling vector table
Save SR to stack
Copy accept-interrupt
level to I3 to I0
Save PC to stack
Branch to interrupt
exception service routine
IRQOUT = high
No
H-UDI
No
interrupt?
Yes
No
Level 15
interrupt?
Yes
Yes
I3 to I0 ≤
level 14?
No
Level 14
No
interrupt?
Yes
Level 1
No
interrupt?
I3 to I0 ≤
Yes
level 13?
No _Yes
I3 to I0 =
level 0?
No
Figure 6.2 Interrupt Operation Flow
Rev. 2.00 Mar. 14, 2008 Page 172 of 1824
REJ09B0290-0200