r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 368

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

10. Interrupt Controller (INTC)
Rev.1.00 Jan. 10, 2008 Page 338 of 1658
REJ09B0261-0100
No
No
No
exception handling routine
Program execution state
CPUOPM.INTMU = 1?
Set interrupt source
code in INTEVT
Save SR in SSR;
save PC in SPC;
save R15 in SGR
accepted interrupt level
Set SR.IMASK to
ICR0.NMIB = 1?
ICR0.MAI = 1?
SR.BL = 0 or
sleep mode?
Yes
generated?
Branch to
Interrupt
NMI?
Yes
No
No
Yes
Yes
Figure 10.5 Flowchart of Interrupt Operation
Yes
Yes
No
Is NMI input low?
Yes
NMI?
No
Yes
Is SR.IMASK level
No
14 or less?
Yes
interrupt?
Yes
Level 15
No
Yes
Is SR.IMASK level
No
13 or less?
interrupt?
Yes
Level 14
No
Yes
Is SR.IMASK level
No
interrupt?
Yes
Level 1
No
0?
No