Datasheet

Section 5 Interrupt Controller
Rev. 2.00 Aug. 20, 2008 Page 99 of 1198
REJ09B0403-0200
Program execution state
Interrupt generated?
NMI
An interrupt with interrupt
control level 1?
IRQ0
IRQ1
EINT
IRQ0
IRQ1
EINT
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
Pending
I = 0 I = 0
Yes
Yes
No
No
Figure 5.6 Flowchart of Procedure Up to Interrupt Acceptance in Interrupt
Control Mode 1