Datasheet

Section 5 Interrupt Controller
Rev. 3.00 Mar 21, 2006 page 109 of 788
REJ09B0300-0300
Program excution state
Interrupt generated?
NMI
An interrupt with interrupt
control level 1?
IRQ0
IRQ1
IFBFI3
IRQ0
IRQ1
IFBFI3
UI = 0
Save PC and CCR
I 1, UI 1
Read vector address
Branch to interrupt handling routine
Yes
No
Yes
Yes
Yes
No
No
Yes
No
Yes No
Yes
Yes
No
No
Yes
Yes
No
Hold pending
I = 0 I = 0
Yes
Yes
No
No
Figure 5.6 Flowchart of Procedure up to Interrupt Acceptance
in Interrupt Control Mode 1